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<p class='location'>Struct Generics</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#fields">Fields</a><div class="sidebar-links"><a href="#structfield.lt_token">lt_token</a><a href="#structfield.params">params</a><a href="#structfield.gt_token">gt_token</a><a href="#structfield.where_clause">where_clause</a></div><a class="sidebar-title" href="#methods">Methods</a><div class="sidebar-links"><a href="#method.type_params">type_params</a><a href="#method.type_params_mut">type_params_mut</a><a href="#method.lifetimes">lifetimes</a><a href="#method.lifetimes_mut">lifetimes_mut</a><a href="#method.const_params">const_params</a><a href="#method.const_params_mut">const_params_mut</a><a href="#method.make_where_clause">make_where_clause</a><a href="#method.split_for_impl">split_for_impl</a></div><a class="sidebar-title" href="#implementations">Trait Implementations</a><div class="sidebar-links"><a href="#impl-Synom">Synom</a><a href="#impl-ToTokens">ToTokens</a><a href="#impl-Default">Default</a><a href="#impl-Clone">Clone</a></div><a class="sidebar-title" href="#synthetic-implementations">Auto Trait Implementations</a><div class="sidebar-links"><a href="#impl-Send">!Send</a><a href="#impl-Sync">!Sync</a></div></div><p class='location'><a href='index.html'>syn</a></p><script>window.sidebarCurrent = {name: 'Generics', ty: 'struct', relpath: ''};</script><script defer src="sidebar-items.js"></script></div>
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<section id='main' class="content"><h1 class='fqn'><span class='in-band'>Struct <a href='index.html'>syn</a>::<wbr><a class="struct" href=''>Generics</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../src/syn/macros.rs.html#47' title='goto source code'>[src]</a></span></h1><div class="docblock type-decl"><pre class='rust struct'>pub struct Generics {
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pub lt_token: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/token/struct.Lt.html" title="struct syn::token::Lt">Lt</a>>,
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pub params: <a class="struct" href="../syn/punctuated/struct.Punctuated.html" title="struct syn::punctuated::Punctuated">Punctuated</a><<a class="enum" href="../syn/enum.GenericParam.html" title="enum syn::GenericParam">GenericParam</a>, <a class="struct" href="../syn/token/struct.Comma.html" title="struct syn::token::Comma">Comma</a>>,
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pub gt_token: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/token/struct.Gt.html" title="struct syn::token::Gt">Gt</a>>,
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pub where_clause: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/struct.WhereClause.html" title="struct syn::WhereClause">WhereClause</a>>,
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}</pre></div><div class='docblock'><p>Lifetimes and type parameters attached to a declaration of a function,
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enum, trait, etc.</p>
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<p><em>This type is available if Syn is built with the <code>"derive"</code> or <code>"full"</code>
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feature.</em></p>
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</div><h2 id='fields' class='fields small-section-header'>
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Fields<a href='#fields' class='anchor'></a></h2><span id="structfield.lt_token" class="structfield small-section-header">
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<a href="#structfield.lt_token" class="anchor field"></a>
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<span id="lt_token.v" class='invisible'>
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<code>lt_token: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/token/struct.Lt.html" title="struct syn::token::Lt">Lt</a>></code>
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</span></span><span id="structfield.params" class="structfield small-section-header">
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<a href="#structfield.params" class="anchor field"></a>
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<span id="params.v" class='invisible'>
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<code>params: <a class="struct" href="../syn/punctuated/struct.Punctuated.html" title="struct syn::punctuated::Punctuated">Punctuated</a><<a class="enum" href="../syn/enum.GenericParam.html" title="enum syn::GenericParam">GenericParam</a>, <a class="struct" href="../syn/token/struct.Comma.html" title="struct syn::token::Comma">Comma</a>></code>
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</span></span><span id="structfield.gt_token" class="structfield small-section-header">
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<a href="#structfield.gt_token" class="anchor field"></a>
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<span id="gt_token.v" class='invisible'>
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<code>gt_token: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/token/struct.Gt.html" title="struct syn::token::Gt">Gt</a>></code>
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</span></span><span id="structfield.where_clause" class="structfield small-section-header">
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<a href="#structfield.where_clause" class="anchor field"></a>
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<span id="where_clause.v" class='invisible'>
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<code>where_clause: <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="../syn/struct.WhereClause.html" title="struct syn::WhereClause">WhereClause</a>></code>
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</span></span>
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<h2 id='methods' class='small-section-header'>
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Methods<a href='#methods' class='anchor'></a>
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</h2>
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<h3 id='impl' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code><a href='#impl' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#80-161' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.type_params' class="method"><span id='type_params.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.type_params' class='fnname'>type_params</a>(&self) -> TypeParams</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#88-90' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &</code><a
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href="struct.TypeParam.html"><code
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style="padding-left:0;padding-right:0;">TypeParam</code></a><code
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style="padding-left:0;">></code>
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over the type parameters in <code>self.params</code>.</p>
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</div><h4 id='method.type_params_mut' class="method"><span id='type_params_mut.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.type_params_mut' class='fnname'>type_params_mut</a>(&mut self) -> TypeParamsMut</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#99-101' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &mut </code><a
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href="struct.TypeParam.html"><code
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style="padding-left:0;padding-right:0;">TypeParam</code></a><code
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style="padding-left:0;">></code>
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over the type parameters in <code>self.params</code>.</p>
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</div><h4 id='method.lifetimes' class="method"><span id='lifetimes.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.lifetimes' class='fnname'>lifetimes</a>(&self) -> Lifetimes</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#110-112' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &</code><a
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href="struct.LifetimeDef.html"><code
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style="padding-left:0;padding-right:0;">LifetimeDef</code></a><code
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style="padding-left:0;">></code>
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over the lifetime parameters in <code>self.params</code>.</p>
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</div><h4 id='method.lifetimes_mut' class="method"><span id='lifetimes_mut.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.lifetimes_mut' class='fnname'>lifetimes_mut</a>(&mut self) -> LifetimesMut</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#121-123' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &mut </code><a
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href="struct.LifetimeDef.html"><code
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style="padding-left:0;padding-right:0;">LifetimeDef</code></a><code
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style="padding-left:0;">></code>
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over the lifetime parameters in <code>self.params</code>.</p>
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</div><h4 id='method.const_params' class="method"><span id='const_params.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.const_params' class='fnname'>const_params</a>(&self) -> ConstParams</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#132-134' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &</code><a
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href="struct.ConstParam.html"><code
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style="padding-left:0;padding-right:0;">ConstParam</code></a><code
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style="padding-left:0;">></code>
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over the constant parameters in <code>self.params</code>.</p>
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</div><h4 id='method.const_params_mut' class="method"><span id='const_params_mut.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.const_params_mut' class='fnname'>const_params_mut</a>(&mut self) -> ConstParamsMut</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#143-145' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns an
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<code
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style="padding-right:0;">Iterator<Item = &mut </code><a
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href="struct.ConstParam.html"><code
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style="padding-left:0;padding-right:0;">ConstParam</code></a><code
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style="padding-left:0;">></code>
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over the constant parameters in <code>self.params</code>.</p>
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</div><h4 id='method.make_where_clause' class="method"><span id='make_where_clause.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.make_where_clause' class='fnname'>make_where_clause</a>(&mut self) -> &mut <a class="struct" href="../syn/struct.WhereClause.html" title="struct syn::WhereClause">WhereClause</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#148-160' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Initializes an empty <code>where</code>-clause if there is not one present already.</p>
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</div></div><h3 id='impl-1' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code><a href='#impl-1' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#305-337' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.split_for_impl' class="method"><span id='split_for_impl.v' class='invisible'><table class='table-display'><tbody><tr><td><code>pub fn <a href='#method.split_for_impl' class='fnname'>split_for_impl</a>(<br> &self<br>) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">(</a><a class="struct" href="../syn/struct.ImplGenerics.html" title="struct syn::ImplGenerics">ImplGenerics</a>, <a class="struct" href="../syn/struct.TypeGenerics.html" title="struct syn::TypeGenerics">TypeGenerics</a>, <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&<a class="struct" href="../syn/struct.WhereClause.html" title="struct syn::WhereClause">WhereClause</a>><a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.tuple.html">)</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#330-336' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Split a type's generics into the pieces required for impl'ing a trait
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for that type.</p>
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<pre class="rust rust-example-rendered">
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<span class="kw">let</span> (<span class="ident">impl_generics</span>, <span class="ident">ty_generics</span>, <span class="ident">where_clause</span>) <span class="op">=</span> <span class="ident">generics</span>.<span class="ident">split_for_impl</span>();
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<span class="macro">quote</span><span class="macro">!</span> {
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<span class="kw">impl</span> #<span class="ident">impl_generics</span> <span class="ident">MyTrait</span> <span class="kw">for</span> #<span class="ident">name</span> #<span class="ident">ty_generics</span> #<span class="ident">where_clause</span> {
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<span class="comment">// ...</span>
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}
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}</pre>
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<p><em>This method is available if Syn is built with the <code>"derive"</code> or
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<code>"full"</code> feature and the <code>"printing"</code> feature.</em></p>
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</div></div>
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<h2 id='implementations' class='small-section-header'>
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Trait Implementations<a href='#implementations' class='anchor'></a>
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</h2>
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<div id='implementations-list'>
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<h3 id='impl-Synom' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="../syn/synom/trait.Synom.html" title="trait syn::synom::Synom">Synom</a> for <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code><a href='#impl-Synom' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#494-528' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.parse' class="method"><span id='parse.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../syn/synom/trait.Synom.html#tymethod.parse' class='fnname'>parse</a>(i: <a class="struct" href="../syn/buffer/struct.Cursor.html" title="struct syn::buffer::Cursor">Cursor</a>) -> <a class="type" href="../syn/synom/type.PResult.html" title="type syn::synom::PResult">PResult</a><Self></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/parsers.rs.html#68-70' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><h4 id='method.description' class="method"><span id='description.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../syn/synom/trait.Synom.html#method.description' class='fnname'>description</a>() -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><&'static <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.str.html">str</a>></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#525-527' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>A short name of the type being parsed. <a href="../syn/synom/trait.Synom.html#method.description">Read more</a></p>
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</div></div><h3 id='impl-ToTokens' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="../quote/to_tokens/trait.ToTokens.html" title="trait quote::to_tokens::ToTokens">ToTokens</a> for <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code><a href='#impl-ToTokens' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#759-794' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.to_tokens' class="method"><span id='to_tokens.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../quote/to_tokens/trait.ToTokens.html#tymethod.to_tokens' class='fnname'>to_tokens</a>(&self, tokens: &mut <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a>)</code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#760-793' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Write <code>self</code> to the given <code>TokenStream</code>. <a href="../quote/to_tokens/trait.ToTokens.html#tymethod.to_tokens">Read more</a></p>
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</div><h4 id='method.into_token_stream' class="method"><span id='into_token_stream.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='../quote/to_tokens/trait.ToTokens.html#method.into_token_stream' class='fnname'>into_token_stream</a>(self) -> <a class="struct" href="../proc_macro2/struct.TokenStream.html" title="struct proc_macro2::TokenStream">TokenStream</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/quote/to_tokens.rs.html#64-71' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Convert <code>self</code> directly into a <code>TokenStream</code> object. <a href="../quote/to_tokens/trait.ToTokens.html#method.into_token_stream">Read more</a></p>
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</div></div><h3 id='impl-Default' class='impl'><span class='in-band'><table class='table-display'><tbody><tr><td><code>impl <a class="trait" href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code><a href='#impl-Default' class='anchor'></a></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#18' title='goto source code'>[src]</a></span></td></tr></tbody></table></h3><div class='impl-items'><h4 id='method.default' class="method"><span id='default.v' class='invisible'><table class='table-display'><tbody><tr><td><code>fn <a href='https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default' class='fnname'>default</a>() -> <a class="struct" href="../syn/struct.Generics.html" title="struct syn::Generics">Generics</a></code></span></td><td><span class='out-of-band'><div class='ghost'></div><a class='srclink' href='../src/syn/generics.rs.html#18' title='goto source code'>[src]</a></td></tr></tbody></table></span></h4><div class='docblock'><p>Returns the "default value" for a type. <a href="https://doc.rust-lang.org/nightly/core/default/trait.Default.html#tymethod.default">Read more</a></p>
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