628377c83b
This patch refactors the test suite: - Instead of always generating the documentation with the available rustdoc version, we now store generated documentation for all supported rustdoc versions in the test/html directory. - Instead of using one snapshot per test case, we now use one snapshot per test case and rustdoc version.
28 lines
4.5 KiB
HTML
28 lines
4.5 KiB
HTML
<!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 `log_enabled` macro in crate `log`."><meta name="keywords" content="rust, rustlang, rust-lang, log_enabled"><title>log::log_enabled - 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="https://www.rust-lang.org/favicon.ico"><style type="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><body class="rustdoc macro"><!--[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='../log/index.html'><div class='logo-container'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo'></div></a><div class="sidebar-elems"><p class='location'><a href='index.html'>log</a></p><script>window.sidebarCurrent = {name: 'log_enabled', ty: 'macro', 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/log/macros.rs.html#210-220' title='goto source code'>[src]</a></span><span class='in-band'>Macro <a href='index.html'>log</a>::<wbr><a class="macro" href=''>log_enabled</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><div class="example-wrap"><pre class="rust macro">
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<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">log_enabled</span> {
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(<span class="ident">target</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">target</span>:<span class="ident">expr</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">lvl</span>:<span class="ident">expr</span>) <span class="op">=</span><span class="op">></span> { ... };
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(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">lvl</span>:<span class="ident">expr</span>) <span class="op">=</span><span class="op">></span> { ... };
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}</pre></div>
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</div><div class='docblock'><p>Determines if a message logged at the specified level in that module will
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be logged.</p>
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<p>This can be used to avoid expensive computation of log message arguments if
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the message would be ignored anyway.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<pre><code class="language-edition2018">use log::Level::Debug;
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use log::{debug, log_enabled};
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# fn foo() {
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if log_enabled!(Debug) {
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let data = expensive_call();
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debug!("expensive debug data: {} {}", data.x, data.y);
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}
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if log_enabled!(target: "Global", Debug) {
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let data = expensive_call();
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debug!(target: "Global", "expensive debug data: {} {}", data.x, data.y);
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}
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# }
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# struct Data { x: u32, y: u32 }
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# fn expensive_call() -> Data { Data { x: 0, y: 0 } }
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# fn main() {}
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</code></pre>
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