<!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 `WriteBytesExt` trait in crate `byteorder`.">
<meta name="keywords" content="rust, rustlang, rust-lang, WriteBytesExt">
<title>byteorder::WriteBytesExt - Rust</title>
<link rel="stylesheet" type="text/css" href="../normalize.css">
<link rel="stylesheet" type="text/css" href="../rustdoc.css">
<link rel="stylesheet" type="text/css" href="../main.css">
</head>
<body class="rustdoc">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
<p class='location'><a href='index.html'>byteorder</a></p><script>window.sidebarCurrent = {name: 'WriteBytesExt', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
</nav>
<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 trait">
<h1 class='fqn'><span class='in-band'>Trait <a href='index.html'>byteorder</a>::<wbr><a class='trait' href=''>WriteBytesExt</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/byteorder/new.rs.html#151-265' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait WriteBytesExt: <a class='trait' href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html' title='std::io::Write'>Write</a> {
fn <a href='#method.write_u8' class='fnname'>write_u8</a>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u8.html'>u8</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_i8' class='fnname'>write_i8</a>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i8.html'>i8</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_u16' class='fnname'>write_u16</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u16.html'>u16</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_i16' class='fnname'>write_i16</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_u32' class='fnname'>write_u32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u32.html'>u32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_i32' class='fnname'>write_i32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i32.html'>i32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_u64' class='fnname'>write_u64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u64.html'>u64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_i64' class='fnname'>write_i64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i64.html'>i64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_uint' class='fnname'>write_uint</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u64.html'>u64</a>, nbytes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_int' class='fnname'>write_int</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i64.html'>i64</a>, nbytes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_f32' class='fnname'>write_f32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.f32.html'>f32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
fn <a href='#method.write_f64' class='fnname'>write_f64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.f64.html'>f64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>> { ... }
}</pre><div class='docblock'><p>Extends <code>Write</code> with methods for writing numbers. (For <code>std::io</code>.)</p>
<p>Most of the methods defined here have an unconstrained type parameter that
must be explicitly instantiated. Typically, it is instantiated with either
the <code>BigEndian</code> or <code>LittleEndian</code> types defined in this crate.</p>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<p>Write unsigned 16 bit big-endian integers to a <code>Write</code>:</p>
<pre class='rust rust-example-rendered'>
<span class='kw'>use</span> <span class='ident'>byteorder</span>::{<span class='ident'>BigEndian</span>, <span class='ident'>WriteBytesExt</span>};
<span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>wtr</span> <span class='op'>=</span> <span class='macro'>vec</span><span class='macro'>!</span>[];
<span class='ident'>wtr</span>.<span class='ident'>write_u16</span>::<span class='op'><</span><span class='ident'>BigEndian</span><span class='op'>></span>(<span class='number'>517</span>).<span class='ident'>unwrap</span>();
<span class='ident'>wtr</span>.<span class='ident'>write_u16</span>::<span class='op'><</span><span class='ident'>BigEndian</span><span class='op'>></span>(<span class='number'>768</span>).<span class='ident'>unwrap</span>();
<span class='macro'>assert_eq</span><span class='macro'>!</span>(<span class='ident'>wtr</span>, <span class='macro'>vec</span><span class='macro'>!</span>[<span class='number'>2</span>, <span class='number'>5</span>, <span class='number'>3</span>, <span class='number'>0</span>]);</pre>
</div>
<h2 id='provided-methods'>Provided Methods</h2>
<div class='methods'>
<h3 id='method.write_u8' class='method'><span id='write_u8.v' class='invisible'><code>fn <a href='#method.write_u8' class='fnname'>write_u8</a>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u8.html'>u8</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes an unsigned 8 bit integer to the underlying writer.</p>
<p>Note that since this writes a single byte, no byte order conversions
are used. It is included for completeness.</p>
</div><h3 id='method.write_i8' class='method'><span id='write_i8.v' class='invisible'><code>fn <a href='#method.write_i8' class='fnname'>write_i8</a>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i8.html'>i8</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a signed 8 bit integer to the underlying writer.</p>
<p>Note that since this writes a single byte, no byte order conversions
are used. It is included for completeness.</p>
</div><h3 id='method.write_u16' class='method'><span id='write_u16.v' class='invisible'><code>fn <a href='#method.write_u16' class='fnname'>write_u16</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u16.html'>u16</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes an unsigned 16 bit integer to the underlying writer.</p>
</div><h3 id='method.write_i16' class='method'><span id='write_i16.v' class='invisible'><code>fn <a href='#method.write_i16' class='fnname'>write_i16</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i16.html'>i16</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a signed 16 bit integer to the underlying writer.</p>
</div><h3 id='method.write_u32' class='method'><span id='write_u32.v' class='invisible'><code>fn <a href='#method.write_u32' class='fnname'>write_u32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u32.html'>u32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes an unsigned 32 bit integer to the underlying writer.</p>
</div><h3 id='method.write_i32' class='method'><span id='write_i32.v' class='invisible'><code>fn <a href='#method.write_i32' class='fnname'>write_i32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i32.html'>i32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a signed 32 bit integer to the underlying writer.</p>
</div><h3 id='method.write_u64' class='method'><span id='write_u64.v' class='invisible'><code>fn <a href='#method.write_u64' class='fnname'>write_u64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u64.html'>u64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes an unsigned 64 bit integer to the underlying writer.</p>
</div><h3 id='method.write_i64' class='method'><span id='write_i64.v' class='invisible'><code>fn <a href='#method.write_i64' class='fnname'>write_i64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i64.html'>i64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a signed 64 bit integer to the underlying writer.</p>
</div><h3 id='method.write_uint' class='method'><span id='write_uint.v' class='invisible'><code>fn <a href='#method.write_uint' class='fnname'>write_uint</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.u64.html'>u64</a>, nbytes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes an unsigned n-bytes integer to the underlying writer.</p>
<p>If the given integer is not representable in the given number of bytes,
this method panics. If <code>nbytes > 8</code>, this method panics.</p>
</div><h3 id='method.write_int' class='method'><span id='write_int.v' class='invisible'><code>fn <a href='#method.write_int' class='fnname'>write_int</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.i64.html'>i64</a>, nbytes: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.usize.html'>usize</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a signed n-bytes integer to the underlying writer.</p>
<p>If the given integer is not representable in the given number of bytes,
this method panics. If <code>nbytes > 8</code>, this method panics.</p>
</div><h3 id='method.write_f32' class='method'><span id='write_f32.v' class='invisible'><code>fn <a href='#method.write_f32' class='fnname'>write_f32</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.f32.html'>f32</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a IEEE754 single-precision (4 bytes) floating point number to
the underlying writer.</p>
</div><h3 id='method.write_f64' class='method'><span id='write_f64.v' class='invisible'><code>fn <a href='#method.write_f64' class='fnname'>write_f64</a><T: <a class='trait' href='../byteorder/trait.ByteOrder.html' title='byteorder::ByteOrder'>ByteOrder</a>>(&mut self, n: <a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.f64.html'>f64</a>) -> <a class='type' href='https://doc.rust-lang.org/nightly/std/io/error/type.Result.html' title='std::io::error::Result'>Result</a><<a class='primitive' href='https://doc.rust-lang.org/nightly/std/primitive.tuple.html'>()</a>></code></span></h3><div class='docblock'><p>Writes a IEEE754 double-precision (8 bytes) floating point number to
the underlying writer.</p>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl<W: <a class='trait' href='https://doc.rust-lang.org/nightly/std/io/trait.Write.html' title='std::io::Write'>Write</a> + ?<a class='trait' href='https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html' title='core::marker::Sized'>Sized</a>> WriteBytesExt for W</code></li>
</ul><script type="text/javascript" async
src="../implementors/byteorder/trait.WriteBytesExt.js">
</script></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>?</dt>
<dd>Show this help dialog</dd>
<dt>S</dt>
<dd>Focus the search field</dd>
<dt>⇤</dt>
<dd>Move up in search results</dd>
<dt>⇥</dt>
<dd>Move down in search results</dd>
<dt>⏎</dt>
<dd>Go to active search result</dd>
<dt>+</dt>
<dd>Collapse/expand 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 = "byteorder";
</script>
<script src="../jquery.js"></script>
<script src="../main.js"></script>
<script defer src="../search-index.js"></script>
</body>
</html>