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<p class='location'>Trait Default</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'>core</a>::<wbr><a href='index.html'>default</a></p><script>window.sidebarCurrent = {name: 'Default', 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'>core</a>::<wbr><a href='index.html'>default</a>::<wbr><a class="trait" href=''>Default</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>]
</a>
</span><a class='srclink' href='../../src/core/default.rs.html#94-126' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait Default: <a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> {
fn <a href='#tymethod.default' class='fnname'>default</a>() -> Self;
}</pre><div class='docblock'><p>A trait for giving a type a useful default value.</p>
<p>Sometimes, you want to fall back to some kind of default value, and
don't particularly care what it is. This comes up often with <code>struct</code>s
that define a set of options:</p>
<pre class="rust rust-example-rendered">
<span class="kw">struct</span> <span class="ident">SomeOptions</span> {
<span class="ident">foo</span>: <span class="ident">i32</span>,
<span class="ident">bar</span>: <span class="ident">f32</span>,
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0A%23%5Ballow(dead_code)%5D%0Astruct%20SomeOptions%20%7B%0A%20%20%20%20foo%3A%20i32%2C%0A%20%20%20%20bar%3A%20f32%2C%0A%7D%0A%7D">Run</a></pre>
<p>How can we define some default values? You can use <code>Default</code>:</p>
<pre class="rust rust-example-rendered">
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>)]</span>
<span class="kw">struct</span> <span class="ident">SomeOptions</span> {
<span class="ident">foo</span>: <span class="ident">i32</span>,
<span class="ident">bar</span>: <span class="ident">f32</span>,
}
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="kw">let</span> <span class="ident">options</span>: <span class="ident">SomeOptions</span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23%5Ballow(dead_code)%5D%0A%23%5Bderive(Default)%5D%0Astruct%20SomeOptions%20%7B%0A%20%20%20%20foo%3A%20i32%2C%0A%20%20%20%20bar%3A%20f32%2C%0A%7D%0A%0Afn%20main()%20%7B%0A%20%20%20%20let%20options%3A%20SomeOptions%20%3D%20Default%3A%3Adefault()%3B%0A%7D%0A">Run</a></pre>
<p>Now, you get all of the default values. Rust implements <code>Default</code> for various primitives types.</p>
<p>If you want to override a particular option, but still retain the other defaults:</p>
<pre class="rust rust-example-rendered">
<span class="kw">fn</span> <span class="ident">main</span>() {
<span class="kw">let</span> <span class="ident">options</span> <span class="op">=</span> <span class="ident">SomeOptions</span> { <span class="ident">foo</span>: <span class="number">42</span>, ..<span class="ident">Default</span>::<span class="ident">default</span>() };
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23%5Ballow(dead_code)%5D%0A%23%5Bderive(Default)%5D%0Astruct%20SomeOptions%20%7B%0A%20%20%20%20foo%3A%20i32%2C%0A%20%20%20%20bar%3A%20f32%2C%0A%7D%0Afn%20main()%20%7B%0A%20%20%20%20let%20options%20%3D%20SomeOptions%20%7B%20foo%3A%2042%2C%20..Default%3A%3Adefault()%20%7D%3B%0A%7D%0A">Run</a></pre>
<h2 id='derivable' class='section-header'><a href='#derivable'>Derivable</a></h2>
<p>This trait can be used with <code>#[derive]</code> if all of the type's fields implement
<code>Default</code>. When <code>derive</code>d, it will use the default value for each field's type.</p>
<h2 id='how-can-i-implement-default' class='section-header'><a href='#how-can-i-implement-default'>How can I implement <code>Default</code>?</a></h2>
<p>Provide an implementation for the <code>default()</code> method that returns the value of
your type that should be the default:</p>
<pre class="rust rust-example-rendered">
<span class="kw">enum</span> <span class="ident">Kind</span> {
<span class="ident">A</span>,
<span class="ident">B</span>,
<span class="ident">C</span>,
}
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">Kind</span> {
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">Kind</span> { <span class="ident">Kind</span>::<span class="ident">A</span> }
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=%23!%5Ballow(dead_code)%5D%0Afn%20main()%20%7B%0Aenum%20Kind%20%7B%0A%20%20%20%20A%2C%0A%20%20%20%20B%2C%0A%20%20%20%20C%2C%0A%7D%0A%0Aimpl%20Default%20for%20Kind%20%7B%0A%20%20%20%20fn%20default()%20-%3E%20Kind%20%7B%20Kind%3A%3AA%20%7D%0A%7D%0A%7D">Run</a></pre>
<h1 id='examples' class='section-header'><a href='#examples'>Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="attribute">#[<span class="ident">derive</span>(<span class="ident">Default</span>)]</span>
<span class="kw">struct</span> <span class="ident">SomeOptions</span> {
<span class="ident">foo</span>: <span class="ident">i32</span>,
<span class="ident">bar</span>: <span class="ident">f32</span>,
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0A%23%5Ballow(dead_code)%5D%0A%23%5Bderive(Default)%5D%0Astruct%20SomeOptions%20%7B%0A%20%20%20%20foo%3A%20i32%2C%0A%20%20%20%20bar%3A%20f32%2C%0A%7D%0A%7D">Run</a></pre>
</div>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.default' class='method'><span id='default.v' class='invisible'><code>fn <a href='#tymethod.default' class='fnname'>default</a>() -> Self</code></span></h3><div class='docblock'><p>Returns the "default value" for a type.</p>
<p>Default values are often some kind of initial value, identity value, or anything else that
may make sense as a default.</p>
<h1 id='examples-1' class='section-header'><a href='#examples-1'>Examples</a></h1>
<p>Using built-in default values:</p>
<pre class="rust rust-example-rendered">
<span class="kw">let</span> <span class="ident">i</span>: <span class="ident">i8</span> <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
<span class="kw">let</span> (<span class="ident">x</span>, <span class="ident">y</span>): (<span class="prelude-ty">Option</span><span class="op"><</span><span class="ident">String</span><span class="op">></span>, <span class="ident">f64</span>) <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();
<span class="kw">let</span> (<span class="ident">a</span>, <span class="ident">b</span>, (<span class="ident">c</span>, <span class="ident">d</span>)): (<span class="ident">i32</span>, <span class="ident">u32</span>, (<span class="ident">bool</span>, <span class="ident">bool</span>)) <span class="op">=</span> <span class="ident">Default</span>::<span class="ident">default</span>();<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0Alet%20i%3A%20i8%20%3D%20Default%3A%3Adefault()%3B%0Alet%20(x%2C%20y)%3A%20(Option%3CString%3E%2C%20f64)%20%3D%20Default%3A%3Adefault()%3B%0Alet%20(a%2C%20b%2C%20(c%2C%20d))%3A%20(i32%2C%20u32%2C%20(bool%2C%20bool))%20%3D%20Default%3A%3Adefault()%3B%0A%7D">Run</a></pre>
<p>Making your own:</p>
<pre class="rust rust-example-rendered">
<span class="kw">enum</span> <span class="ident">Kind</span> {
<span class="ident">A</span>,
<span class="ident">B</span>,
<span class="ident">C</span>,
}
<span class="kw">impl</span> <span class="ident">Default</span> <span class="kw">for</span> <span class="ident">Kind</span> {
<span class="kw">fn</span> <span class="ident">default</span>() <span class="op">-></span> <span class="ident">Kind</span> { <span class="ident">Kind</span>::<span class="ident">A</span> }
}<a class="test-arrow" target="_blank" href="https://play.rust-lang.org/?code=fn%20main()%20%7B%0A%23%5Ballow(dead_code)%5D%0Aenum%20Kind%20%7B%0A%20%20%20%20A%2C%0A%20%20%20%20B%2C%0A%20%20%20%20C%2C%0A%7D%0A%0Aimpl%20Default%20for%20Kind%20%7B%0A%20%20%20%20fn%20default()%20-%3E%20Kind%20%7B%20Kind%3A%3AA%20%7D%0A%7D%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl<T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for <a class="struct" href="../../core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a><T></code></li>
<li><code>impl<T: ?<a class="trait" href="../../core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>> Default for <a class="struct" href="../../core/marker/struct.PhantomData.html" title="struct core::marker::PhantomData">PhantomData</a><T></code></li>
<li><code>impl Default for ()</code></li>
<li><code>impl Default for bool</code></li>
<li><code>impl Default for char</code></li>
<li><code>impl Default for usize</code></li>
<li><code>impl Default for u8</code></li>
<li><code>impl Default for u16</code></li>
<li><code>impl Default for u32</code></li>
<li><code>impl Default for u64</code></li>
<li><code>impl Default for u128</code></li>
<li><code>impl Default for isize</code></li>
<li><code>impl Default for i8</code></li>
<li><code>impl Default for i16</code></li>
<li><code>impl Default for i32</code></li>
<li><code>impl Default for i64</code></li>
<li><code>impl Default for i128</code></li>
<li><code>impl Default for f32</code></li>
<li><code>impl Default for f64</code></li>
<li><code>impl<T> Default for [T; 32] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 31] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 30] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 29] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 28] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 27] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 26] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 25] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 24] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 23] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 22] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 21] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 20] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 19] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 18] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 17] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 16] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 15] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 14] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 13] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 12] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 11] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 10] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 9] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 8] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 7] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 6] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 5] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 4] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 3] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 2] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 1] <span class="where fmt-newline">where<br> T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, </span></code></li>
<li><code>impl<T> Default for [T; 0]</code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicBool.html" title="struct core::sync::atomic::AtomicBool">AtomicBool</a></code></li>
<li><code>impl<T> Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicPtr.html" title="struct core::sync::atomic::AtomicPtr">AtomicPtr</a><T></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicI8.html" title="struct core::sync::atomic::AtomicI8">AtomicI8</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicU8.html" title="struct core::sync::atomic::AtomicU8">AtomicU8</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicI16.html" title="struct core::sync::atomic::AtomicI16">AtomicI16</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicU16.html" title="struct core::sync::atomic::AtomicU16">AtomicU16</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicI32.html" title="struct core::sync::atomic::AtomicI32">AtomicI32</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicU32.html" title="struct core::sync::atomic::AtomicU32">AtomicU32</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicI64.html" title="struct core::sync::atomic::AtomicI64">AtomicI64</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicU64.html" title="struct core::sync::atomic::AtomicU64">AtomicU64</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicIsize.html" title="struct core::sync::atomic::AtomicIsize">AtomicIsize</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/sync/atomic/struct.AtomicUsize.html" title="struct core::sync::atomic::AtomicUsize">AtomicUsize</a></code></li>
<li><code>impl<T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for <a class="struct" href="../../core/cell/struct.Cell.html" title="struct core::cell::Cell">Cell</a><T></code></li>
<li><code>impl<T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for <a class="struct" href="../../core/cell/struct.RefCell.html" title="struct core::cell::RefCell">RefCell</a><T></code></li>
<li><code>impl<T: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for <a class="struct" href="../../core/cell/struct.UnsafeCell.html" title="struct core::cell::UnsafeCell">UnsafeCell</a><T></code></li>
<li><code>impl<T> Default for <a class="struct" href="../../core/iter/struct.Empty.html" title="struct core::iter::Empty">Empty</a><T></code></li>
<li><code>impl<T> Default for <a class="enum" href="../../core/option/enum.Option.html" title="enum core::option::Option">Option</a><T></code></li>
<li><code>impl<'a, T> Default for &'a [T]</code></li>
<li><code>impl<'a, T> Default for &'a mut [T]</code></li>
<li><code>impl<'a> Default for &'a str</code></li>
<li><code>impl Default for <a class="struct" href="../../core/hash/struct.SipHasher13.html" title="struct core::hash::SipHasher13">SipHasher13</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/hash/struct.SipHasher24.html" title="struct core::hash::SipHasher24">SipHasher24</a></code></li>
<li><code>impl Default for <a class="struct" href="../../core/hash/struct.SipHasher.html" title="struct core::hash::SipHasher">SipHasher</a></code></li>
<li><code>impl<H> Default for <a class="struct" href="../../core/hash/struct.BuildHasherDefault.html" title="struct core::hash::BuildHasherDefault">BuildHasherDefault</a><H></code></li>
<li><code>impl Default for <a class="struct" href="../../core/fmt/struct.Error.html" title="struct core::fmt::Error">Error</a></code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A,)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, H: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G, H)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, H: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, I: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G, H, I)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, H: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, I: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, J: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G, H, I, J)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, H: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, I: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, J: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, K: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G, H, I, J, K)</code></li>
<li><code>impl<A: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, B: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, C: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, D: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, E: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, F: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, G: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, H: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, I: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, J: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, K: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>, L: <a class="trait" href="../../core/default/trait.Default.html" title="trait core::default::Default">Default</a>> Default for (A, B, C, D, E, F, G, H, I, J, K, L)</code></li>
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