<!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 `failure` crate."> <meta name="keywords" content="rust, rustlang, rust-lang, failure"> <title>failure - 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="../main.css" id="themeStyle"> <script src="../storage.js"></script> </head> <body class="rustdoc mod"> <!--[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> <p class='location'>Crate failure</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#macros">Macros</a></li><li><a href="#structs">Structs</a></li><li><a href="#traits">Traits</a></li><li><a href="#functions">Functions</a></li></ul></div><p class='location'></p><script>window.sidebarCurrent = {name: 'failure', ty: 'mod', relpath: '../'};</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"> <input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"> </div> </form> </nav> <section id='main' class="content"> <h1 class='fqn'><span class='in-band'>Crate <a class="mod" href=''>failure</a></span><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/failure/lib.rs.html#1-229' title='goto source code'>[src]</a></span></h1> <div class='docblock'><p>An experimental new error-handling library.</p> <p>The primary items exported by this library are:</p> <ul> <li><code>Fail</code>: a new trait for custom error types in Rust.</li> <li><code>Error</code>: a wrapper around <code>Fail</code> types to make it easy to coalesce them at higher levels.</li> </ul> <p>As a general rule, library authors should create their own error types and implement <code>Fail</code> for them, whereas application authors should primarily deal with the <code>Error</code> type. There are exceptions to this rule, though, in both directions, and users should do whatever seems most appropriate to their situation.</p> </div><h2 id='macros' class='section-header'><a href="#macros">Macros</a></h2> <table> <tr class=' module-item'> <td><a class="macro" href="macro.bail.html" title='macro failure::bail'>bail</a></td> <td class='docblock-short'> <p>Exits a function early with an <code>Error</code>.</p> </td> </tr> <tr class=' module-item'> <td><a class="macro" href="macro.ensure.html" title='macro failure::ensure'>ensure</a></td> <td class='docblock-short'> <p>Exits a function early with an <code>Error</code> if the condition is not satisfied.</p> </td> </tr> <tr class=' module-item'> <td><a class="macro" href="macro.format_err.html" title='macro failure::format_err'>format_err</a></td> <td class='docblock-short'> <p>Constructs an <code>Error</code> using the standard string interpolation syntax.</p> </td> </tr></table><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2> <table> <tr class=' module-item'> <td><a class="struct" href="struct.Backtrace.html" title='struct failure::Backtrace'>Backtrace</a></td> <td class='docblock-short'> <p>A <code>Backtrace</code>.</p> </td> </tr> <tr class=' module-item'> <td><a class="struct" href="struct.Causes.html" title='struct failure::Causes'>Causes</a></td> <td class='docblock-short'> <p>A iterator over the causes of a <code>Fail</code></p> </td> </tr> <tr class=' module-item'> <td><a class="struct" href="struct.Compat.html" title='struct failure::Compat'>Compat</a></td> <td class='docblock-short'> <p>A compatibility wrapper around an error type from this crate.</p> </td> </tr> <tr class=' module-item'> <td><a class="struct" href="struct.Context.html" title='struct failure::Context'>Context</a></td> <td class='docblock-short'> <p>An error with context around it.</p> </td> </tr> <tr class=' module-item'> <td><a class="struct" href="struct.Error.html" title='struct failure::Error'>Error</a></td> <td class='docblock-short'> <p>The <code>Error</code> type, which can contain any failure.</p> </td> </tr> <tr class=' module-item'> <td><a class="struct" href="struct.SyncFailure.html" title='struct failure::SyncFailure'>SyncFailure</a></td> <td class='docblock-short'> <p>Wrapper for <code>std</code> errors to make them <code>Sync</code>.</p> </td> </tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2> <table> <tr class=' module-item'> <td><a class="trait" href="trait.Fail.html" title='trait failure::Fail'>Fail</a></td> <td class='docblock-short'> <p>The <code>Fail</code> trait.</p> </td> </tr> <tr class=' module-item'> <td><a class="trait" href="trait.ResultExt.html" title='trait failure::ResultExt'>ResultExt</a></td> <td class='docblock-short'> <p>Extension methods for <code>Result</code>.</p> </td> </tr></table><h2 id='functions' class='section-header'><a href="#functions">Functions</a></h2> <table> <tr class=' module-item'> <td><a class="fn" href="fn.err_msg.html" title='fn failure::err_msg'>err_msg</a></td> <td class='docblock-short'> <p>Constructs a <code>Fail</code> type from a string.</p> </td> </tr></table></section> <section id='search' class="content hidden"></section> <section class="footer"></section> <aside id="help" class="hidden"> <div> <h1 class="hidden">Help</h1> <div class="shortcuts"> <h2>Keyboard Shortcuts</h2> <dl> <dt><kbd>?</kbd></dt> <dd>Show this help dialog</dd> <dt><kbd>S</kbd></dt> <dd>Focus the search field</dd> <dt><kbd>↑</kbd></dt> <dd>Move up in search results</dd> <dt><kbd>↓</kbd></dt> <dd>Move down in search results</dd> <dt><kbd>↹</kbd></dt> <dd>Switch tab</dd> <dt><kbd>⏎</kbd></dt> <dd>Go to active search result</dd> <dt><kbd>+</kbd></dt> <dd>Expand all sections</dd> <dt><kbd>-</kbd></dt> <dd>Collapse all sections</dd> </dl> </div> <div class="infos"> <h2>Search Tricks</h2> <p> Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type. </p> <p> Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>. </p> <p> Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>) </p> </div> </div> </aside> <script> window.rootPath = "../"; window.currentCrate = "failure"; </script> <script src="../main.js"></script> <script defer src="../search-index.js"></script> </body> </html>