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| <h1 class="content-header header-section1" id="ref_depr_builtin" itemprop="headline">List of deprecated built-ins</h1> |
| </div></div><p>The following built-ins are deprecated, but still |
| working:</p><ul> |
| <li> |
| <p> <code class="inline-code">default</code>: This was deprecated |
| with the introduction of the <a href="dgui_template_exp.html#dgui_template_exp_missing_default">default value |
| operator</a>. |
| <code class="inline-code"><em class="code-color">exp1</em>?default(<em class="code-color">exp2</em>)</code> |
| is near equivalent with |
| <code class="inline-code"><em class="code-color">exp1</em>!<em class="code-color">exp2</em></code>, |
| and |
| <code class="inline-code">(<em class="code-color">exp1</em>)?default(<em class="code-color">exp2</em>)</code> |
| is near equivalent with with |
| <code class="inline-code">(<em class="code-color">exp1</em>)!<em class="code-color">exp2</em></code>. |
| The only difference is that prior to FreeMarker 2.4, the |
| <code class="inline-code">default</code> built-in has always evaluated |
| <code class="inline-code"><em class="code-color">exp2</em></code>, while the |
| default value operator only evaluates it when the default value is |
| really needed. Starting from FreeMarker 2.4, however, the |
| <code class="inline-code">default</code> built-in was improved, and behaves |
| exactly like the default value operator.</p> |
| </li> |
| |
| <li> |
| <p><code class="inline-code">exists</code>: This was deprecated with |
| the introduction of the <a href="dgui_template_exp.html#dgui_template_exp_missing_test">missing value test |
| operator</a>. |
| <code class="inline-code"><em class="code-color">exp1</em>?exists</code> is |
| equivalent with |
| <code class="inline-code"><em class="code-color">exp1</em>??</code>, also |
| <code class="inline-code">(<em class="code-color">exp1</em>)?exists</code> is |
| equivalent with with |
| <code class="inline-code">(<em class="code-color">exp1</em>)??</code>.</p> |
| </li> |
| |
| <li> |
| <p><code class="inline-code">if_exists</code>: This was deprecated |
| with the introduction of the <a href="dgui_template_exp.html#dgui_template_exp_missing_default">default value |
| operator</a>. |
| <code class="inline-code"><em class="code-color">exp1</em>?if_exists</code> is |
| similar to <code class="inline-code"><em class="code-color">exp1</em>!</code>, |
| and <code class="inline-code">(<em class="code-color">exp1</em>)?if_exists</code> |
| is similar to |
| <code class="inline-code">(<em class="code-color">exp1</em>)!</code>. The |
| difference is that the default value with |
| <code class="inline-code">if_exists</code> is not only empty string, empty |
| sequence and empty hashs at the same time, but also boolean |
| <code class="inline-code">false</code> and a transform that does nothing and |
| ignores all parameters.</p> |
| </li> |
| |
| <li> |
| <p><code class="inline-code">web_safe</code>: the same as <a href="ref_builtins_string.html#ref_builtin_html"><code>html</code></a></p> |
| </li> |
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