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padding-bottom--lg"><div class=row><div class="col docItemCol_VOVn"><div class="theme-doc-version-banner alert alert--warning margin-bottom--md" role=alert><div>This is documentation for <!-- -->Apache Fory™<!-- --> <b>0.15</b>, which is no longer actively maintained.</div><div class=margin-top--md>For up-to-date documentation, see the <b><a href=/docs/guide/xlang/getting_started>latest version</a></b> (<!-- -->1.3.0<!-- -->).</div></div><div class=docItemContainer_Djhp><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label=Breadcrumbs><ul class=breadcrumbs><li class=breadcrumbs__item><a aria-label="Home page" class=breadcrumbs__link href=/><svg viewBox="0 0 24 24" class=breadcrumbHomeIcon_YNFT><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill=currentColor /></svg></a><li class=breadcrumbs__item><span class=breadcrumbs__link>Guide</span><li class=breadcrumbs__item><a class=breadcrumbs__link href=/docs/0.15/guide/xlang/><span>Cross Language</span></a><li class="breadcrumbs__item breadcrumbs__item--active"><span class=breadcrumbs__link>Getting Started</span></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 0.15</span><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type=button class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Getting Started</h1></header><p>This guide covers installation and basic setup for cross-language serialization in all supported languages.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=installation>Installation<a href=#installation class=hash-link aria-label="Direct link to Installation" title="Direct link to Installation" translate=no></a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=java>Java<a href=#java class=hash-link aria-label="Direct link to Java" title="Direct link to Java" translate=no></a></h3>
<p><strong>Maven:</strong></p>
<div class="language-xml codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-xml codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token tag punctuation" style=color:#393A34>&lt;</span><span class="token tag" style=color:#00009f>dependency</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34>&lt;</span><span class="token tag" style=color:#00009f>groupId</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain">org.apache.fory</span><span class="token tag punctuation" style=color:#393A34>&lt;/</span><span class="token tag" style=color:#00009f>groupId</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34>&lt;</span><span class="token tag" style=color:#00009f>artifactId</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain">fory-core</span><span class="token tag punctuation" style=color:#393A34>&lt;/</span><span class="token tag" style=color:#00009f>artifactId</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token tag punctuation" style=color:#393A34>&lt;</span><span class="token tag" style=color:#00009f>version</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain">0.15.0</span><span class="token tag punctuation" style=color:#393A34>&lt;/</span><span class="token tag" style=color:#00009f>version</span><span class="token tag punctuation" style=color:#393A34>></span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token tag punctuation" style=color:#393A34>&lt;/</span><span class="token tag" style=color:#00009f>dependency</span><span class="token tag punctuation" style=color:#393A34>></span><br/></div></code></pre></div></div>
<p><strong>Gradle:</strong></p>
<div class="language-gradle codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-gradle codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">implementation 'org.apache.fory:fory-core:0.15.0'</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=python>Python<a href=#python class=hash-link aria-label="Direct link to Python" title="Direct link to Python" translate=no></a></h3>
<div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">pip </span><span class="token function" style=color:#d73a49>install</span><span class="token plain"> pyfory</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=go>Go<a href=#go class=hash-link aria-label="Direct link to Go" title="Direct link to Go" translate=no></a></h3>
<div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">go get github.com/apache/fory/go/fory</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=rust>Rust<a href=#rust class=hash-link aria-label="Direct link to Rust" title="Direct link to Rust" translate=no></a></h3>
<div class="language-toml codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-toml codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">[dependencies]</span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory = "0.13"</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=javascript>JavaScript<a href=#javascript class=hash-link aria-label="Direct link to JavaScript" title="Direct link to JavaScript" translate=no></a></h3>
<div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token function" style=color:#d73a49>npm</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>install</span><span class="token plain"> @apache-fory/fory</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=c>C++<a href=#c class=hash-link aria-label="Direct link to C++" title="Direct link to C++" translate=no></a></h3>
<p>Use Bazel or CMake to build from source. See <a class="" href=/docs/0.15/guide/cpp/>C++ Guide</a> for details.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=enable-cross-language-mode>Enable Cross-Language Mode<a href=#enable-cross-language-mode class=hash-link aria-label="Direct link to Enable Cross-Language Mode" title="Direct link to Enable Cross-Language Mode" translate=no></a></h2>
<p>Each language requires enabling xlang mode to ensure binary compatibility across languages.</p>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=java-1>Java<a href=#java-1 class=hash-link aria-label="Direct link to Java" title="Direct link to Java" translate=no></a></h3>
<div class="language-java codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-java codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>config</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">Fory</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>builder</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withLanguage</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Language</span><span class="token punctuation" style=color:#393A34>.</span><span class="token constant" style=color:#36acaa>XLANG</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token comment" style=color:#999988;font-style:italic>// Enable cross-language mode</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withRefTracking</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token comment" style=color:#999988;font-style:italic>// Optional: for circular references</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>build</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=python-1>Python<a href=#python-1 class=hash-link aria-label="Direct link to Python" title="Direct link to Python" translate=no></a></h3>
<div class="language-python codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-python codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> pyfory</span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic># Cross-language mode must be enabled explicitly</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Fory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">xlang</span><span class="token operator" style=color:#393A34>=</span><span class="token boolean" style=color:#36acaa>True</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic># Enable reference tracking when needed</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Fory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">xlang</span><span class="token operator" style=color:#393A34>=</span><span class="token boolean" style=color:#36acaa>True</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> ref</span><span class="token operator" style=color:#393A34>=</span><span class="token boolean" style=color:#36acaa>True</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=go-1>Go<a href=#go-1 class=hash-link aria-label="Direct link to Go" title="Direct link to Go" translate=no></a></h3>
<div class="language-go codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-go codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> forygo </span><span class="token string" style=color:#e3116c>"github.com/apache/fory/go/fory"</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>:=</span><span class="token plain"> forygo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>NewFory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">forygo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WithXlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// Or with reference tracking</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>:=</span><span class="token plain"> forygo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>NewFory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">forygo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WithXlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> forygo</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>WithTrackRef</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=rust-1>Rust<a href=#rust-1 class=hash-link aria-label="Direct link to Rust" title="Direct link to Rust" translate=no></a></h3>
<div class="language-rust codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-rust codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>use</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>fory</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>::</span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>let</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>::</span><span class="token function" style=color:#d73a49>default</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>xlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=javascript-1>JavaScript<a href=#javascript-1 class=hash-link aria-label="Direct link to JavaScript" title="Direct link to JavaScript" translate=no></a></h3>
<div class="language-javascript codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-javascript codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> Fory </span><span class="token keyword" style=color:#00009f>from</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"@apache-fory/fory"</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>const</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=c-1>C++<a href=#c-1 class=hash-link aria-label="Direct link to C++" title="Direct link to C++" translate=no></a></h3>
<div class="language-cpp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-cpp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token macro property directive-hash" style=color:#36acaa>#</span><span class="token macro property directive keyword" style=color:#00009f>include</span><span class="token macro property" style=color:#36acaa> </span><span class="token macro property string" style=color:#e3116c>"fory/serialization/fory.h"</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>using</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>namespace</span><span class="token plain"> fory</span><span class="token double-colon punctuation" style=color:#393A34>::</span><span class="token plain">serialization</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>auto</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token double-colon punctuation" style=color:#393A34>::</span><span class="token function" style=color:#d73a49>builder</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>xlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>build</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=type-registration>Type Registration<a href=#type-registration class=hash-link aria-label="Direct link to Type Registration" title="Direct link to Type Registration" translate=no></a></h2>
<p>Custom types must be registered with consistent names or IDs across all languages.</p>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=register-by-name-recommended>Register by Name (Recommended)<a href=#register-by-name-recommended class=hash-link aria-label="Direct link to Register by Name (Recommended)" title="Direct link to Register by Name (Recommended)" translate=no></a></h3>
<p>Using string names is more flexible and less prone to conflicts:</p>
<p><strong>Java:</strong></p>
<div class="language-java codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-java codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>register</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token keyword" style=color:#00009f>class</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<p><strong>Python:</strong></p>
<div class="language-python codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-python codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">register_type</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> typename</span><span class="token operator" style=color:#393A34>=</span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<p><strong>Go:</strong></p>
<div class="language-go codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-go codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>RegisterNamedStruct</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>{</span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<p><strong>Rust:</strong></p>
<div class="language-rust codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-rust codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>use</span><span class="token plain"> </span><span class="token namespace" style=opacity:0.7>fory</span><span class="token namespace punctuation" style=opacity:0.7;color:#393A34>::</span><span class="token punctuation" style=color:#393A34>{</span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token class-name">ForyObject</span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token attribute attr-name" style=color:#00a4db>#[derive(ForyObject)]</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>struct</span><span class="token plain"> </span><span class="token type-definition class-name">Person</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> name</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token class-name">String</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> age</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>i32</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>let</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>mut</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>::</span><span class="token function" style=color:#d73a49>default</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>xlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory</span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>register_by_namespace</span><span class="token punctuation" style=color:#393A34>::</span><span class="token operator" style=color:#393A34>&lt;</span><span class="token class-name">Person</span><span class="token operator" style=color:#393A34>></span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"example"</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>expect</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"register Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<p><strong>JavaScript:</strong></p>
<div class="language-javascript codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-javascript codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>const</span><span class="token plain"> description </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> Type</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>object</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token literal-property property" style=color:#36acaa>name</span><span class="token operator" style=color:#393A34>:</span><span class="token plain"> Type</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>string</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token literal-property property" style=color:#36acaa>age</span><span class="token operator" style=color:#393A34>:</span><span class="token plain"> Type</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>int32</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>registerSerializer</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">description</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<p><strong>C++:</strong></p>
<div class="language-cpp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-cpp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token generic-function function" style=color:#d73a49>register_struct</span><span class="token generic-function generic class-name operator" style=color:#393A34>&lt;</span><span class="token generic-function generic class-name">Person</span><span class="token generic-function generic class-name operator" style=color:#393A34>></span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// For enums, use register_enum:</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// fory.register_enum&lt;Color>("example.Color");</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=register-by-id>Register by ID<a href=#register-by-id class=hash-link aria-label="Direct link to Register by ID" title="Direct link to Register by ID" translate=no></a></h3>
<p>Using numeric IDs is faster and produces smaller binary output:</p>
<p><strong>Java:</strong></p>
<div class="language-java codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-java codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>register</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token keyword" style=color:#00009f>class</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>100</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><br/></div></code></pre></div></div>
<p><strong>Python:</strong></p>
<div class="language-python codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-python codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">register_type</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> type_id</span><span class="token operator" style=color:#393A34>=</span><span class="token number" style=color:#36acaa>100</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<p><strong>Go:</strong></p>
<div class="language-go codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-go codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>RegisterStruct</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>{</span><span class="token punctuation" style=color:#393A34>}</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>100</span><span class="token punctuation" style=color:#393A34>)</span><br/></div></code></pre></div></div>
<p><strong>C++:</strong></p>
<div class="language-cpp codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-cpp codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token generic-function function" style=color:#d73a49>register_struct</span><span class="token generic-function generic class-name operator" style=color:#393A34>&lt;</span><span class="token generic-function generic class-name">Person</span><span class="token generic-function generic class-name operator" style=color:#393A34>></span><span class="token punctuation" style=color:#393A34>(</span><span class="token number" style=color:#36acaa>100</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// For enums, use register_enum:</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// fory.register_enum&lt;Color>(101);</span><br/></div></code></pre></div></div>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=hello-world-example>Hello World Example<a href=#hello-world-example class=hash-link aria-label="Direct link to Hello World Example" title="Direct link to Hello World Example" translate=no></a></h2>
<p>A complete example showing serialization in Java and deserialization in Python:</p>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=java-serializer>Java (Serializer)<a href=#java-serializer class=hash-link aria-label="Direct link to Java (Serializer)" title="Direct link to Java (Serializer)" translate=no></a></h3>
<div class="language-java codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-java codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>config</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>java</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>nio</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>file</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token class-name">String</span><span class="token plain"> name</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> age</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">HelloWorld</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>static</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>void</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>main</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">String</span><span class="token punctuation" style=color:#393A34>[</span><span class="token punctuation" style=color:#393A34>]</span><span class="token plain"> args</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>throws</span><span class="token plain"> </span><span class="token class-name">Exception</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>builder</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withLanguage</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Language</span><span class="token punctuation" style=color:#393A34>.</span><span class="token constant" style=color:#36acaa>XLANG</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>build</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>register</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token keyword" style=color:#00009f>class</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">Person</span><span class="token plain"> person </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Alice"</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">age </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>30</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>byte</span><span class="token punctuation" style=color:#393A34>[</span><span class="token punctuation" style=color:#393A34>]</span><span class="token plain"> bytes </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>serialize</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">person</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">Files</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>write</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Path</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>of</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"person.bin"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> bytes</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">System</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">out</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>println</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"Serialized to person.bin"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>}</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=python-deserializer>Python (Deserializer)<a href=#python-deserializer class=hash-link aria-label="Direct link to Python (Deserializer)" title="Direct link to Python (Deserializer)" translate=no></a></h3>
<div class="language-python codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-python codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> pyfory</span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>from</span><span class="token plain"> dataclasses </span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> dataclass</span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token decorator annotation punctuation" style=color:#393A34>@dataclass</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> name</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token builtin">str</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> age</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Int32Type</span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Fory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">xlang</span><span class="token operator" style=color:#393A34>=</span><span class="token boolean" style=color:#36acaa>True</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">register_type</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> typename</span><span class="token operator" style=color:#393A34>=</span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>with</span><span class="token plain"> </span><span class="token builtin">open</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string" style=color:#e3116c>"person.bin"</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"rb"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>as</span><span class="token plain"> f</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> data </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> f</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">read</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">person </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">deserialize</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">data</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>print</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string-interpolation string" style=color:#e3116c>f"Name: </span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>{</span><span class="token string-interpolation interpolation">person</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>.</span><span class="token string-interpolation interpolation">name</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>}</span><span class="token string-interpolation string" style=color:#e3116c>, Age: </span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>{</span><span class="token string-interpolation interpolation">person</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>.</span><span class="token string-interpolation interpolation">age</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>}</span><span class="token string-interpolation string" style=color:#e3116c>"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic># Output: Name: Alice, Age: 30</span><br/></div></code></pre></div></div>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=best-practices>Best Practices<a href=#best-practices class=hash-link aria-label="Direct link to Best Practices" title="Direct link to Best Practices" translate=no></a></h2>
<ol>
<li class=""><strong>Use consistent type names</strong>: Ensure all languages use the same type name or ID</li>
<li class=""><strong>Enable reference tracking</strong>: If your data has circular or shared references</li>
<li class=""><strong>Reuse Fory instances</strong>: Creating Fory is expensive; reuse instances</li>
<li class=""><strong>Use type annotations</strong>: In Python, use <code>pyfory.Int32Type</code> etc. for precise type mapping</li>
<li class=""><strong>Test cross-language</strong>: Verify serialization works across all target languages</li>
</ol>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=next-steps>Next Steps<a href=#next-steps class=hash-link aria-label="Direct link to Next Steps" title="Direct link to Next Steps" translate=no></a></h2>
<ul>
<li class=""><a class="" href=/docs/0.15/specification/xlang_type_mapping>Type Mapping</a> - Cross-language type mapping reference</li>
<li class=""><a class="" href=/docs/0.15/guide/xlang/serialization>Serialization</a> - Detailed serialization examples</li>
<li class=""><a class="" href=/docs/0.15/guide/xlang/troubleshooting>Troubleshooting</a> - Common issues and solutions</li>
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