| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `common/rusty_leveldb_sgx/src/merging_iter.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>merging_iter.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../rusty_leveldb/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../rusty_leveldb/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::cmp::Cmp; |
| <span class="kw">use </span><span class="kw">crate</span>::types::{current_key_val, Direction, LdbIterator}; |
| |
| <span class="kw">use </span>std::cmp::Ordering; |
| <span class="kw">use </span>std::rc::Rc; |
| |
| <span class="comment">// Warning: This module is kinda messy. The original implementation is |
| // not that much better though :-) |
| // |
| // Issues: 1) prev() may not work correctly at the beginning of a merging |
| // iterator. |
| |
| </span><span class="attribute">#[derive(PartialEq)] |
| </span><span class="kw">enum </span>SL { |
| Smallest, |
| Largest, |
| } |
| |
| <span class="kw">pub struct </span>MergingIter { |
| iters: Vec<Box<<span class="kw">dyn </span>LdbIterator>>, |
| current: <span class="prelude-ty">Option</span><usize>, |
| direction: Direction, |
| cmp: Rc<Box<<span class="kw">dyn </span>Cmp>>, |
| } |
| |
| <span class="kw">impl </span>MergingIter { |
| <span class="doccomment">/// Construct a new merging iterator. |
| </span><span class="kw">pub fn </span>new(cmp: Rc<Box<<span class="kw">dyn </span>Cmp>>, iters: Vec<Box<<span class="kw">dyn </span>LdbIterator>>) -> MergingIter { |
| <span class="kw">let </span>mi = MergingIter { |
| iters, |
| current: <span class="prelude-val">None</span>, |
| direction: Direction::Forward, |
| cmp, |
| }; |
| mi |
| } |
| |
| <span class="kw">fn </span>init(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.iters.len() { |
| <span class="self">self</span>.iters[i].reset(); |
| <span class="self">self</span>.iters[i].advance(); |
| <span class="kw">if </span>!<span class="self">self</span>.iters[i].valid() { |
| <span class="self">self</span>.iters[i].reset() |
| } |
| } |
| <span class="self">self</span>.find_smallest(); |
| } |
| |
| <span class="doccomment">/// Adjusts the direction of the iterator depending on whether the last |
| /// call was next() or prev(). This basically sets all iterators to one |
| /// entry after (Forward) or one entry before (Reverse) the current() entry. |
| </span><span class="kw">fn </span>update_direction(<span class="kw-2">&mut </span><span class="self">self</span>, d: Direction) { |
| <span class="kw">if </span><span class="self">self</span>.direction == d { |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>keybuf = <span class="macro">vec!</span>[]; |
| <span class="kw">let </span><span class="kw-2">mut </span>valbuf = <span class="macro">vec!</span>[]; |
| |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((key, <span class="kw">_</span>)) = current_key_val(<span class="self">self</span>) { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(current) = <span class="self">self</span>.current { |
| <span class="kw">match </span>d { |
| Direction::Forward <span class="kw">if </span><span class="self">self</span>.direction == Direction::Reverse => { |
| <span class="self">self</span>.direction = Direction::Forward; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.iters.len() { |
| <span class="kw">if </span>i != current { |
| <span class="self">self</span>.iters[i].seek(<span class="kw-2">&</span>key); |
| <span class="comment">// This doesn't work if two iterators are returning the exact same |
| // keys. However, in reality, two entries will always have differing |
| // sequence numbers. |
| </span><span class="kw">if </span><span class="self">self</span>.iters[i].current(<span class="kw-2">&mut </span>keybuf, <span class="kw-2">&mut </span>valbuf) { |
| <span class="kw">if </span><span class="self">self</span>.cmp.cmp(<span class="kw-2">&</span>keybuf, <span class="kw-2">&</span>key) == Ordering::Equal { |
| <span class="self">self</span>.iters[i].advance(); |
| } |
| } |
| } |
| } |
| } |
| Direction::Reverse <span class="kw">if </span><span class="self">self</span>.direction == Direction::Forward => { |
| <span class="self">self</span>.direction = Direction::Reverse; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.iters.len() { |
| <span class="kw">if </span>i != current { |
| <span class="self">self</span>.iters[i].seek(<span class="kw-2">&</span>key); |
| <span class="kw">if </span><span class="self">self</span>.iters[i].valid() { |
| <span class="self">self</span>.iters[i].prev(); |
| } <span class="kw">else </span>{ |
| <span class="comment">// seek to last. |
| </span><span class="kw">while </span><span class="self">self</span>.iters[i].advance() {} |
| } |
| } |
| } |
| } |
| <span class="kw">_ </span>=> {} |
| } |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>find_smallest(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.find(SL::Smallest) |
| } |
| <span class="kw">fn </span>find_largest(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.find(SL::Largest) |
| } |
| |
| <span class="kw">fn </span>find(<span class="kw-2">&mut </span><span class="self">self</span>, direction: SL) { |
| <span class="kw">if </span><span class="self">self</span>.iters.len() == <span class="number">0 </span>{ |
| <span class="comment">// Iterator stays invalid. |
| </span><span class="kw">return</span>; |
| } |
| |
| <span class="kw">let </span>ord; |
| |
| <span class="kw">if </span>direction == SL::Smallest { |
| ord = Ordering::Less; |
| } <span class="kw">else </span>{ |
| ord = Ordering::Greater; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>next_ix = <span class="number">0</span>; |
| <span class="kw">let </span>(<span class="kw-2">mut </span>current, <span class="kw-2">mut </span>smallest, <span class="kw-2">mut </span>valscratch) = (<span class="macro">vec!</span>[], <span class="macro">vec!</span>[], <span class="macro">vec!</span>[]); |
| |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">1</span>..<span class="self">self</span>.iters.len() { |
| <span class="kw">if </span><span class="self">self</span>.iters[i].current(<span class="kw-2">&mut </span>current, <span class="kw-2">&mut </span>valscratch) { |
| <span class="kw">if </span><span class="self">self</span>.iters[next_ix].current(<span class="kw-2">&mut </span>smallest, <span class="kw-2">&mut </span>valscratch) { |
| <span class="kw">if </span><span class="self">self</span>.cmp.cmp(<span class="kw-2">&</span>current, <span class="kw-2">&</span>smallest) == ord { |
| next_ix = i; |
| } |
| } <span class="kw">else </span>{ |
| next_ix = i; |
| } |
| } |
| } |
| |
| <span class="self">self</span>.current = <span class="prelude-val">Some</span>(next_ix); |
| } |
| } |
| |
| <span class="kw">impl </span>LdbIterator <span class="kw">for </span>MergingIter { |
| <span class="kw">fn </span>advance(<span class="kw-2">&mut </span><span class="self">self</span>) -> bool { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(current) = <span class="self">self</span>.current { |
| <span class="self">self</span>.update_direction(Direction::Forward); |
| <span class="kw">if </span>!<span class="self">self</span>.iters[current].advance() { |
| <span class="comment">// Take this iterator out of rotation; this will return false |
| // for every call to current() and thus it will be ignored |
| // from here on. |
| </span><span class="self">self</span>.iters[current].reset(); |
| } |
| <span class="self">self</span>.find_smallest(); |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.init(); |
| } |
| <span class="self">self</span>.valid() |
| } |
| <span class="kw">fn </span>valid(<span class="kw-2">&</span><span class="self">self</span>) -> bool { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ix) = <span class="self">self</span>.current { |
| <span class="self">self</span>.iters[ix].valid() |
| } <span class="kw">else </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| <span class="kw">fn </span>seek(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>[u8]) { |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.iters.len() { |
| <span class="self">self</span>.iters[i].seek(key); |
| } |
| <span class="self">self</span>.find_smallest(); |
| } |
| <span class="kw">fn </span>reset(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..<span class="self">self</span>.iters.len() { |
| <span class="self">self</span>.iters[i].reset(); |
| } |
| <span class="self">self</span>.current = <span class="prelude-val">None</span>; |
| } |
| <span class="kw">fn </span>current(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&mut </span>Vec<u8>, val: <span class="kw-2">&mut </span>Vec<u8>) -> bool { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(ix) = <span class="self">self</span>.current { |
| <span class="self">self</span>.iters[ix].current(key, val) |
| } <span class="kw">else </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| <span class="kw">fn </span>prev(<span class="kw-2">&mut </span><span class="self">self</span>) -> bool { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>(current) = <span class="self">self</span>.current { |
| <span class="kw">if </span><span class="self">self</span>.iters[current].valid() { |
| <span class="self">self</span>.update_direction(Direction::Reverse); |
| <span class="self">self</span>.iters[current].prev(); |
| <span class="self">self</span>.find_largest(); |
| <span class="self">self</span>.valid() |
| } <span class="kw">else </span>{ |
| <span class="bool-val">false |
| </span>} |
| } <span class="kw">else </span>{ |
| <span class="bool-val">false |
| </span>} |
| } |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"enclave_unit_test"</span>)] |
| </span><span class="kw">pub mod </span>tests { |
| <span class="kw">use super</span>::<span class="kw-2">*</span>; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::cmp::DefaultCmp; |
| <span class="kw">use </span><span class="kw">crate</span>::skipmap::tests; |
| <span class="kw">use </span><span class="kw">crate</span>::test_util::{test_iterator_properties, LdbIteratorIter, TestLdbIter}; |
| <span class="kw">use </span><span class="kw">crate</span>::types::{current_key_val, LdbIterator}; |
| |
| <span class="kw">use </span>teaclave_test_utils::<span class="kw-2">*</span>; |
| |
| <span class="kw">pub fn </span>run_tests() -> bool { |
| <span class="macro">run_tests!</span>( |
| test_merging_one, |
| test_merging_two, |
| test_merging_zero, |
| test_merging_behavior, |
| test_merging_forward_backward, |
| test_merging_real, |
| test_merging_seek_reset, |
| ) |
| } |
| |
| <span class="kw">fn </span>test_merging_one() { |
| <span class="kw">let </span>skm = tests::make_skipmap(); |
| <span class="kw">let </span>iter = skm.iter(); |
| <span class="kw">let </span><span class="kw-2">mut </span>iter2 = skm.iter(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>miter = MergingIter::new(Rc::new(Box::new(DefaultCmp)), <span class="macro">vec!</span>[Box::new(iter)]); |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((k, v)) = miter.next() { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((k2, v2)) = iter2.next() { |
| <span class="macro">assert_eq!</span>(k, k2); |
| <span class="macro">assert_eq!</span>(v, v2); |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Expected element from iter2"</span>); |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">break</span>; |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>test_merging_two() { |
| <span class="kw">let </span>skm = tests::make_skipmap(); |
| <span class="kw">let </span>iter = skm.iter(); |
| <span class="kw">let </span>iter2 = skm.iter(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>miter = MergingIter::new( |
| Rc::new(Box::new(DefaultCmp)), |
| <span class="macro">vec!</span>[Box::new(iter), Box::new(iter2)], |
| ); |
| |
| <span class="kw">loop </span>{ |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((k, v)) = miter.next() { |
| <span class="kw">if let </span><span class="prelude-val">Some</span>((k2, v2)) = miter.next() { |
| <span class="macro">assert_eq!</span>(k, k2); |
| <span class="macro">assert_eq!</span>(v, v2); |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Odd number of elements"</span>); |
| } |
| } <span class="kw">else </span>{ |
| <span class="kw">break</span>; |
| } |
| } |
| } |
| |
| <span class="kw">fn </span>test_merging_zero() { |
| <span class="kw">let </span><span class="kw-2">mut </span>miter = MergingIter::new(Rc::new(Box::new(DefaultCmp)), <span class="macro">vec!</span>[]); |
| <span class="macro">assert_eq!</span>(<span class="number">0</span>, LdbIteratorIter::wrap(<span class="kw-2">&mut </span>miter).count()); |
| } |
| |
| <span class="kw">fn </span>test_merging_behavior() { |
| <span class="kw">let </span>val = <span class="string">"def"</span>.as_bytes(); |
| <span class="kw">let </span>iter = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"aba"</span>), val), (b(<span class="string">"abc"</span>), val)]); |
| <span class="kw">let </span>iter2 = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"abb"</span>), val), (b(<span class="string">"abd"</span>), val)]); |
| <span class="kw">let </span>miter = MergingIter::new( |
| Rc::new(Box::new(DefaultCmp)), |
| <span class="macro">vec!</span>[Box::new(iter), Box::new(iter2)], |
| ); |
| test_iterator_properties(miter); |
| } |
| |
| <span class="kw">fn </span>test_merging_forward_backward() { |
| <span class="kw">let </span>val = <span class="string">"def"</span>.as_bytes(); |
| <span class="kw">let </span>iter = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"aba"</span>), val), (b(<span class="string">"abc"</span>), val), (b(<span class="string">"abe"</span>), val)]); |
| <span class="kw">let </span>iter2 = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"abb"</span>), val), (b(<span class="string">"abd"</span>), val)]); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>miter = MergingIter::new( |
| Rc::new(Box::new(DefaultCmp)), |
| <span class="macro">vec!</span>[Box::new(iter), Box::new(iter2)], |
| ); |
| |
| <span class="comment">// miter should return the following sequence: [aba, abb, abc, abd, abe] |
| |
| // -> aba |
| </span><span class="kw">let </span>first = miter.next(); |
| <span class="comment">// -> abb |
| </span><span class="kw">let </span>second = miter.next(); |
| <span class="comment">// -> abc |
| </span><span class="kw">let </span>third = miter.next(); |
| <span class="macro">println!</span>(<span class="string">"{:?} {:?} {:?}"</span>, first, second, third); |
| |
| <span class="macro">assert!</span>(first != third); |
| <span class="comment">// abb <- |
| </span><span class="macro">assert!</span>(miter.prev()); |
| <span class="macro">assert_eq!</span>(second, current_key_val(<span class="kw-2">&</span>miter)); |
| <span class="comment">// aba <- |
| </span><span class="macro">assert!</span>(miter.prev()); |
| <span class="macro">assert_eq!</span>(first, current_key_val(<span class="kw-2">&</span>miter)); |
| <span class="comment">// -> abb |
| </span><span class="macro">assert!</span>(miter.advance()); |
| <span class="macro">assert_eq!</span>(second, current_key_val(<span class="kw-2">&</span>miter)); |
| <span class="comment">// -> abc |
| </span><span class="macro">assert!</span>(miter.advance()); |
| <span class="macro">assert_eq!</span>(third, current_key_val(<span class="kw-2">&</span>miter)); |
| <span class="comment">// -> abd |
| </span><span class="macro">assert!</span>(miter.advance()); |
| <span class="macro">assert_eq!</span>( |
| <span class="prelude-val">Some</span>((b(<span class="string">"abd"</span>).to_vec(), val.to_vec())), |
| current_key_val(<span class="kw-2">&</span>miter) |
| ); |
| } |
| |
| <span class="kw">fn </span>b(s: <span class="kw-2">&</span><span class="lifetime">'static </span>str) -> <span class="kw-2">&</span><span class="lifetime">'static </span>[u8] { |
| s.as_bytes() |
| } |
| |
| <span class="kw">fn </span>test_merging_real() { |
| <span class="kw">let </span>val = <span class="string">"def"</span>.as_bytes(); |
| |
| <span class="kw">let </span>it1 = TestLdbIter::new(<span class="macro">vec!</span>[(<span class="kw-2">&</span>b(<span class="string">"aba"</span>), val), (<span class="kw-2">&</span>b(<span class="string">"abc"</span>), val), (<span class="kw-2">&</span>b(<span class="string">"abe"</span>), val)]); |
| <span class="kw">let </span>it2 = TestLdbIter::new(<span class="macro">vec!</span>[(<span class="kw-2">&</span>b(<span class="string">"abb"</span>), val), (<span class="kw-2">&</span>b(<span class="string">"abd"</span>), val)]); |
| <span class="kw">let </span>expected = <span class="macro">vec!</span>[b(<span class="string">"aba"</span>), b(<span class="string">"abb"</span>), b(<span class="string">"abc"</span>), b(<span class="string">"abd"</span>), b(<span class="string">"abe"</span>)]; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = MergingIter::new( |
| Rc::new(Box::new(DefaultCmp)), |
| <span class="macro">vec!</span>[Box::new(it1), Box::new(it2)], |
| ); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>i = <span class="number">0</span>; |
| <span class="kw">for </span>(k, <span class="kw">_</span>) <span class="kw">in </span>LdbIteratorIter::wrap(<span class="kw-2">&mut </span>iter) { |
| <span class="macro">assert_eq!</span>(k, expected[i]); |
| i += <span class="number">1</span>; |
| } |
| } |
| |
| <span class="kw">fn </span>test_merging_seek_reset() { |
| <span class="kw">let </span>val = <span class="string">"def"</span>.as_bytes(); |
| |
| <span class="kw">let </span>it1 = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"aba"</span>), val), (b(<span class="string">"abc"</span>), val), (b(<span class="string">"abe"</span>), val)]); |
| <span class="kw">let </span>it2 = TestLdbIter::new(<span class="macro">vec!</span>[(b(<span class="string">"abb"</span>), val), (b(<span class="string">"abd"</span>), val)]); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>iter = MergingIter::new( |
| Rc::new(Box::new(DefaultCmp)), |
| <span class="macro">vec!</span>[Box::new(it1), Box::new(it2)], |
| ); |
| |
| <span class="macro">assert!</span>(!iter.valid()); |
| iter.advance(); |
| <span class="macro">assert!</span>(iter.valid()); |
| <span class="macro">assert!</span>(current_key_val(<span class="kw-2">&</span>iter).is_some()); |
| |
| iter.seek(<span class="string">"abc"</span>.as_bytes()); |
| <span class="macro">assert_eq!</span>( |
| current_key_val(<span class="kw-2">&</span>iter), |
| <span class="prelude-val">Some</span>((b(<span class="string">"abc"</span>).to_vec(), val.to_vec())) |
| ); |
| iter.seek(<span class="string">"ab0"</span>.as_bytes()); |
| <span class="macro">assert_eq!</span>( |
| current_key_val(<span class="kw-2">&</span>iter), |
| <span class="prelude-val">Some</span>((b(<span class="string">"aba"</span>).to_vec(), val.to_vec())) |
| ); |
| iter.seek(<span class="string">"abx"</span>.as_bytes()); |
| <span class="macro">assert_eq!</span>(current_key_val(<span class="kw-2">&</span>iter), <span class="prelude-val">None</span>); |
| |
| iter.reset(); |
| <span class="macro">assert!</span>(!iter.valid()); |
| iter.next(); |
| <span class="macro">assert_eq!</span>( |
| current_key_val(<span class="kw-2">&</span>iter), |
| <span class="prelude-val">Some</span>((b(<span class="string">"aba"</span>).to_vec(), val.to_vec())) |
| ); |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="rusty_leveldb" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
