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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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<title>error_chain::example_generated::ResultExt - Rust</title>
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2017-07-14 23:24:09 +00:00
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2017-07-14 23:30:16 +00:00
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<p class='location'>Trait ResultExt</p><div class="block items"><ul><li><a href="#required-methods">Required Methods</a></li><li><a href="#implementors">Implementors</a></li></ul></div><p class='location'><a href='../index.html'>error_chain</a>::<wbr><a href='index.html'>example_generated</a></p><script>window.sidebarCurrent = {name: 'ResultExt', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>error_chain</a>::<wbr><a href='index.html'>example_generated</a>::<wbr><a class="trait" href=''>ResultExt</a></span><span class='out-of-band'><span id='render-detail'>
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</span><a class='srclink' href='../../src/error_chain/error_chain.rs.html#305-318' title='goto source code'>[src]</a></span></h1>
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<pre class='rust trait'>pub trait ResultExt<T, E> {
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fn <a href='#tymethod.chain_err' class='fnname'>chain_err</a><F, EK>(self, callback: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>><br> <span class="where">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -> EK,<br> EK: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="enum" href="../../error_chain/example_generated/enum.ErrorKind.html" title="enum error_chain::example_generated::ErrorKind">ErrorKind</a>></span>;
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fn <a href='#tymethod.from_err' class='fnname'>from_err</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>><br> <span class="where">where<br> <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><E></span>;
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}</pre><div class='docblock'><p>Additional methods for <code>Result</code>, for easy interaction with this crate.</p>
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<h2 id='required-methods'>Required Methods</h2>
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<div class='methods'>
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<h3 id='tymethod.chain_err' class='method'><span id='chain_err.v' class='invisible'><code>fn <a href='#tymethod.chain_err' class='fnname'>chain_err</a><F, EK>(self, callback: F) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>> <span class="where fmt-newline">where<br> F: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnOnce.html" title="trait core::ops::function::FnOnce">FnOnce</a>() -> EK,<br> EK: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><<a class="enum" href="../../error_chain/example_generated/enum.ErrorKind.html" title="enum error_chain::example_generated::ErrorKind">ErrorKind</a>>, </span></code></span></h3><div class='docblock'><p>If the <code>Result</code> is an <code>Err</code> then <code>chain_err</code> evaluates the closure,
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which returns <em>some type that can be converted to <code>ErrorKind</code></em>, boxes
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the original error to store as the cause, then returns a new error
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containing the original error.</p>
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</div><h3 id='tymethod.from_err' class='method'><span id='from_err.v' class='invisible'><code>fn <a href='#tymethod.from_err' class='fnname'>from_err</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>> <span class="where fmt-newline">where<br> <a class="struct" href="../../error_chain/example_generated/struct.Error.html" title="struct error_chain::example_generated::Error">Error</a>: <a class="trait" href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html" title="trait core::convert::From">From</a><E>, </span></code></span></h3><div class='docblock'><p>Converts a convertible error via <code>From::from</code> to
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the result error. Useful to turn e.g. <code>std::io::Error</code>
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into our own Error type.</p>
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</div></div>
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<h2 id='implementors'>Implementors</h2>
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<ul class='item-list' id='implementors-list'>
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<li><code>impl<T, E> ResultExt<T, E> for <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, E> <span class="where fmt-newline">where<br> E: <a class="trait" href="https://doc.rust-lang.org/nightly/std/error/trait.Error.html" title="trait std::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + 'static, </span></code></li>
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