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<!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="API documentation for the Rust `normalized_levenshtein` fn in crate `strsim`."><meta name="keywords" content="rust, rustlang, rust-lang, normalized_levenshtein"><title>strsim::normalized_levenshtein - Rust</title><link rel="stylesheet" type="text/css" href="../normalize.css"><link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../dark.css"><link rel="stylesheet" type="text/css" href="../light.css" id="themeStyle"><script src="../storage.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="shortcut icon" href="../favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc fn"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../strsim/index.html'><div class='logo-container'><img src='../rust-logo.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='index.html'>strsim</a></p><script>window.sidebarCurrent = {name: 'normalized_levenshtein', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><a id="settings-menu" href="../settings.html"><img src="../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><h1 class='fqn'><span class='out-of-band'><span id='render-detail'><a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class='inner'>−</span>]</a></span><a class='srclink' href='../src/strsim/lib.rs.html#186-191' title='goto source code'>[src]</a></span><span class='in-band'>Function <a href='index.html'>strsim</a>::<wbr><a class="fn" href=''>normalized_levenshtein</a></span></h1><pre class='rust fn'>pub fn normalized_levenshtein(a: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>, b: &<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></pre><div class='docblock'><p>Calculates a normalized score of the Levenshtein algorithm between 0.0 and
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1.0 (inclusive), where 1.0 means the strings are the same.</p>
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<div class="example-wrap"><pre class="rust rust-example-rendered">
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<span class="kw">use</span> <span class="ident">strsim</span>::<span class="ident">normalized_levenshtein</span>;
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<span class="macro">assert</span><span class="macro">!</span>((<span class="ident">normalized_levenshtein</span>(<span class="string">"kitten"</span>, <span class="string">"sitting"</span>) <span class="op">-</span> <span class="number">0.57142</span>).<span class="ident">abs</span>() <span class="op"><</span> <span class="number">0.00001</span>);
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<span class="macro">assert</span><span class="macro">!</span>((<span class="ident">normalized_levenshtein</span>(<span class="string">""</span>, <span class="string">""</span>) <span class="op">-</span> <span class="number">1.0</span>).<span class="ident">abs</span>() <span class="op"><</span> <span class="number">0.00001</span>);
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<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">normalized_levenshtein</span>(<span class="string">""</span>, <span class="string">"second"</span>).<span class="ident">abs</span>() <span class="op"><</span> <span class="number">0.00001</span>);
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<span class="macro">assert</span><span class="macro">!</span>(<span class="ident">normalized_levenshtein</span>(<span class="string">"first"</span>, <span class="string">""</span>).<span class="ident">abs</span>() <span class="op"><</span> <span class="number">0.00001</span>);
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<span class="macro">assert</span><span class="macro">!</span>((<span class="ident">normalized_levenshtein</span>(<span class="string">"string"</span>, <span class="string">"string"</span>) <span class="op">-</span> <span class="number">1.0</span>).<span class="ident">abs</span>() <span class="op"><</span> <span class="number">0.00001</span>);</pre></div>
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