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<p class='location'>Trait Display</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'>std</a>::<wbr><a href='index.html'>fmt</a></p><script>window.sidebarCurrent = {name: 'Display', 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'>std</a>::<wbr><a href='index.html'>fmt</a>::<wbr><a class="trait" href=''>Display</a></span><span class='out-of-band'><span class='since' title='Stable since Rust version 1.0.0'>1.0.0</span><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>−</span>]
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</span><a class='srclink' href='../../src/core/fmt/mod.rs.html#553-577' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait Display {
fn <a href='#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../std/fmt/struct.Formatter.html" title="struct std::fmt::Formatter">Formatter</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.tuple.html">()</a>, <a class="struct" href="../../std/fmt/struct.Error.html" title="struct std::fmt::Error">Error</a>>;
}</pre><div class='docblock'><p>Format trait for an empty format, <code>{}</code>.</p>
<p><code>Display</code> is similar to <a href="trait.Debug.html"><code>Debug</code></a>, but <code>Display</code> is for user-facing
output, and so cannot be derived.</p>
<p>For more information on formatters, see <a href="../../std/fmt/index.html">the module-level documentation</a>.</p>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<p>Implementing <code>Display</code> on a type:</p>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;
<span class="kw">struct</span> <span class="ident">Point</span> {
<span class="ident">x</span>: <span class="ident">i32</span>,
<span class="ident">y</span>: <span class="ident">i32</span>,
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">Point</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"({}, {})"</span>, <span class="self">self</span>.<span class="ident">x</span>, <span class="self">self</span>.<span class="ident">y</span>)
}
}
<span class="kw">let</span> <span class="ident">origin</span> <span class="op">=</span> <span class="ident">Point</span> { <span class="ident">x</span>: <span class="number">0</span>, <span class="ident">y</span>: <span class="number">0</span> };
<span class="macro">println</span><span class="macro">!</span>(<span class="string">"The origin is: {}"</span>, <span class="ident">origin</span>);<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Ause%20std%3A%3Afmt%3B%0A%0Astruct%20Point%20%7B%0A%20%20%20%20x%3A%20i32%2C%0A%20%20%20%20y%3A%20i32%2C%0A%7D%0A%0Aimpl%20fmt%3A%3ADisplay%20for%20Point%20%7B%0A%20%20%20%20fn%20fmt(%26self%2C%20f%3A%20%26mut%20fmt%3A%3AFormatter)%20-%3E%20fmt%3A%3AResult%20%7B%0A%20%20%20%20%20%20%20%20write!(f%2C%20%22(%7B%7D%2C%20%7B%7D)%22%2C%20self.x%2C%20self.y)%0A%20%20%20%20%7D%0A%7D%0A%0Alet%20origin%20%3D%20Point%20%7B%20x%3A%200%2C%20y%3A%200%20%7D%3B%0A%0Aprintln!(%22The%20origin%20is%3A%20%7B%7D%22%2C%20origin)%3B%0A%7D">Run</a></pre>
</div>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.fmt' class='method'><span id='fmt.v' class='invisible'><code>fn <a href='#tymethod.fmt' class='fnname'>fmt</a>(&self, f: &mut <a class="struct" href="../../std/fmt/struct.Formatter.html" title="struct std::fmt::Formatter">Formatter</a>) -> <a class="enum" href="../../std/result/enum.Result.html" title="enum std::result::Result">Result</a><<a class="primitive" href="../primitive.tuple.html">()</a>, <a class="struct" href="../../std/fmt/struct.Error.html" title="struct std::fmt::Error">Error</a>></code></span></h3><div class='docblock'><p>Formats the value using the given formatter.</p>
<h1 id='examples-1' class='section-header'><a href='#examples-1'>Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">fmt</span>;
<span class="kw">struct</span> <span class="ident">Position</span> {
<span class="ident">longitude</span>: <span class="ident">f32</span>,
<span class="ident">latitude</span>: <span class="ident">f32</span>,
}
<span class="kw">impl</span> <span class="ident">fmt</span>::<span class="ident">Display</span> <span class="kw">for</span> <span class="ident">Position</span> {
<span class="kw">fn</span> <span class="ident">fmt</span>(<span class="kw-2">&</span><span class="self">self</span>, <span class="ident">f</span>: <span class="kw-2">&</span><span class="kw-2">mut</span> <span class="ident">fmt</span>::<span class="ident">Formatter</span>) <span class="op">-></span> <span class="ident">fmt</span>::<span class="prelude-ty">Result</span> {
<span class="macro">write</span><span class="macro">!</span>(<span class="ident">f</span>, <span class="string">"({}, {})"</span>, <span class="self">self</span>.<span class="ident">longitude</span>, <span class="self">self</span>.<span class="ident">latitude</span>)
}
}
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="string">"(1.987, 2.983)"</span>.<span class="ident">to_owned</span>(),
<span class="macro">format</span><span class="macro">!</span>(<span class="string">"{}"</span>, <span class="ident">Position</span> { <span class="ident">longitude</span>: <span class="number">1.987</span>, <span class="ident">latitude</span>: <span class="number">2.983</span>, }));<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Ause%20std%3A%3Afmt%3B%0A%0Astruct%20Position%20%7B%0A%20%20%20%20longitude%3A%20f32%2C%0A%20%20%20%20latitude%3A%20f32%2C%0A%7D%0A%0Aimpl%20fmt%3A%3ADisplay%20for%20Position%20%7B%0A%20%20%20%20fn%20fmt(%26self%2C%20f%3A%20%26mut%20fmt%3A%3AFormatter)%20-%3E%20fmt%3A%3AResult%20%7B%0A%20%20%20%20%20%20%20%20write!(f%2C%20%22(%7B%7D%2C%20%7B%7D)%22%2C%20self.longitude%2C%20self.latitude)%0A%20%20%20%20%7D%0A%7D%0A%0Aassert_eq!(%22(1.987%2C%202.983)%22.to_owned()%2C%0A%20%20%20%20%20%20%20%20%20%20%20format!(%22%7B%7D%22%2C%20Position%20%7B%20longitude%3A%201.987%2C%20latitude%3A%202.983%2C%20%7D))%3B%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl Display for <a class="struct" href="../../std/string/struct.FromUtf16Error.html" title="struct std::string::FromUtf16Error">FromUtf16Error</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/string/struct.FromUtf8Error.html" title="struct std::string::FromUtf8Error">FromUtf8Error</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/string/enum.ParseError.html" title="enum std::string::ParseError">ParseError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/string/struct.String.html" title="struct std::string::String">String</a></code></li>
<li><code>impl<'a, B> Display for <a class="enum" href="../../std/borrow/enum.Cow.html" title="enum std::borrow::Cow">Cow</a><'a, B> <span class="where fmt-newline">where<br> B: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + <a class="trait" href="../../std/borrow/trait.ToOwned.html" title="trait std::borrow::ToOwned">ToOwned</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>,<br> <B as <a class="trait" href="../../std/borrow/trait.ToOwned.html" title="trait std::borrow::ToOwned">ToOwned</a>>::<a class="trait" href="../../std/borrow/trait.ToOwned.html" title="trait std::borrow::ToOwned">Owned</a>: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a>, </span></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/boxed/struct.Box.html" title="struct std::boxed::Box">Box</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/sync/struct.Arc.html" title="struct std::sync::Arc">Arc</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/rc/struct.Rc.html" title="struct std::rc::Rc">Rc</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.f32.html">f32</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.i64.html">i64</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.isize.html">isize</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.u32.html">u32</a></code></li>
<li><code>impl<'a> Display for <a class="struct" href="../../std/fmt/struct.Arguments.html" title="struct std::fmt::Arguments">Arguments</a><'a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.i32.html">i32</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.i128.html">i128</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.EscapeDebug.html" title="struct std::char::EscapeDebug">EscapeDebug</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.u16.html">u16</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/cell/struct.BorrowError.html" title="struct std::cell::BorrowError">BorrowError</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.usize.html">usize</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/num/struct.TryFromIntError.html" title="struct std::num::TryFromIntError">TryFromIntError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.CharTryFromError.html" title="struct std::char::CharTryFromError">CharTryFromError</a></code></li>
<li><code>impl Display for !</code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.u128.html">u128</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/str/struct.Utf8Error.html" title="struct std::str::Utf8Error">Utf8Error</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.char.html">char</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/num/struct.ParseIntError.html" title="struct std::num::ParseIntError">ParseIntError</a></code></li>
<li><code>impl<'a, T> Display for &'a mut T <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><code>impl Display for std::fmt::<a class="struct" href="../../std/fmt/struct.Error.html" title="struct std::fmt::Error">Error</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.u64.html">u64</a></code></li>
<li><code>impl<'a, T> Display for &'a T <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a> + ?<a class="trait" href="../../std/marker/trait.Sized.html" title="trait std::marker::Sized">Sized</a>, </span></code></li>
<li><code>impl Display for <a class="struct" href="../../std/str/struct.ParseBoolError.html" title="struct std::str::ParseBoolError">ParseBoolError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.EscapeUnicode.html" title="struct std::char::EscapeUnicode">EscapeUnicode</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/cell/struct.BorrowMutError.html" title="struct std::cell::BorrowMutError">BorrowMutError</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.f64.html">f64</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.bool.html">bool</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.EscapeDefault.html" title="struct std::char::EscapeDefault">EscapeDefault</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/num/struct.ParseFloatError.html" title="struct std::num::ParseFloatError">ParseFloatError</a></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/num/struct.Wrapping.html" title="struct std::num::Wrapping">Wrapping</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../std/fmt/trait.Display.html" title="trait std::fmt::Display">Display</a>, </span></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.i16.html">i16</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.u8.html">u8</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.i8.html">i8</a></code></li>
<li><code>impl Display for <a class="primitive" href="../primitive.str.html">str</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.ToUppercase.html" title="struct std::char::ToUppercase">ToUppercase</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.DecodeUtf16Error.html" title="struct std::char::DecodeUtf16Error">DecodeUtf16Error</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/char/struct.ToLowercase.html" title="struct std::char::ToLowercase">ToLowercase</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/env/enum.VarError.html" title="enum std::env::VarError">VarError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/env/struct.JoinPathsError.html" title="struct std::env::JoinPathsError">JoinPathsError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/ffi/struct.NulError.html" title="struct std::ffi::NulError">NulError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/ffi/struct.FromBytesWithNulError.html" title="struct std::ffi::FromBytesWithNulError">FromBytesWithNulError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/ffi/struct.IntoStringError.html" title="struct std::ffi::IntoStringError">IntoStringError</a></code></li>
<li><code>impl<W> Display for <a class="struct" href="../../std/io/struct.IntoInnerError.html" title="struct std::io::IntoInnerError">IntoInnerError</a><W></code></li>
<li><code>impl Display for std::io::<a class="struct" href="../../std/io/struct.Error.html" title="struct std::io::Error">Error</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/io/enum.CharsError.html" title="enum std::io::CharsError">CharsError</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/net/enum.IpAddr.html" title="enum std::net::IpAddr">IpAddr</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/net/struct.Ipv4Addr.html" title="struct std::net::Ipv4Addr">Ipv4Addr</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/net/struct.Ipv6Addr.html" title="struct std::net::Ipv6Addr">Ipv6Addr</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/net/enum.SocketAddr.html" title="enum std::net::SocketAddr">SocketAddr</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/net/struct.SocketAddrV4.html" title="struct std::net::SocketAddrV4">SocketAddrV4</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/net/struct.SocketAddrV6.html" title="struct std::net::SocketAddrV6">SocketAddrV6</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/net/struct.AddrParseError.html" title="struct std::net::AddrParseError">AddrParseError</a></code></li>
<li><code>impl<'a> Display for <a class="struct" href="../../std/path/struct.Display.html" title="struct std::path::Display">Display</a><'a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/path/struct.StripPrefixError.html" title="struct std::path::StripPrefixError">StripPrefixError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/process/struct.ExitStatus.html" title="struct std::process::ExitStatus">ExitStatus</a></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/sync/mpsc/struct.SendError.html" title="struct std::sync::mpsc::SendError">SendError</a><T></code></li>
<li><code>impl<T> Display for <a class="enum" href="../../std/sync/mpsc/enum.TrySendError.html" title="enum std::sync::mpsc::TrySendError">TrySendError</a><T></code></li>
<li><code>impl Display for <a class="struct" href="../../std/sync/mpsc/struct.RecvError.html" title="struct std::sync::mpsc::RecvError">RecvError</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/sync/mpsc/enum.TryRecvError.html" title="enum std::sync::mpsc::TryRecvError">TryRecvError</a></code></li>
<li><code>impl Display for <a class="enum" href="../../std/sync/mpsc/enum.RecvTimeoutError.html" title="enum std::sync::mpsc::RecvTimeoutError">RecvTimeoutError</a></code></li>
<li><code>impl Display for <a class="struct" href="../../std/time/struct.SystemTimeError.html" title="struct std::time::SystemTimeError">SystemTimeError</a></code></li>
<li><code>impl<T> Display for <a class="struct" href="../../std/sync/struct.PoisonError.html" title="struct std::sync::PoisonError">PoisonError</a><T></code></li>
<li><code>impl<T> Display for <a class="enum" href="../../std/sync/enum.TryLockError.html" title="enum std::sync::TryLockError">TryLockError</a><T></code></li>
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