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<!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="Parse/validate argument values"><title>TypedValueParser in clap::builder - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="clap" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">&#9776;</button><a class="logo-container" href="../../clap/index.html"><img src="https://raw.githubusercontent.com/clap-rs/clap/master/assets/clap.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../../clap/index.html"><img src="https://raw.githubusercontent.com/clap-rs/clap/master/assets/clap.png" alt="logo"></a><h2><a href="../../clap/index.html">clap</a><span class="version">4.5.2</span></h2></div><h2 class="location"><a href="#">TypedValueParser</a></h2><div class="sidebar-elems"><section><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Value">Value</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.parse_ref">parse_ref</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.map">map</a></li><li><a href="#method.parse">parse</a></li><li><a href="#method.parse_">parse_</a></li><li><a href="#method.parse_ref_">parse_ref_</a></li><li><a href="#method.possible_values">possible_values</a></li><li><a href="#method.try_map">try_map</a></li></ul><h3><a href="#object-safety">Object Safety</a></h3><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In clap::builder</a></h2></div></nav><div class="sidebar-resizer"></div>
<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../../clap/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="../index.html">clap</a>::<wbr><a href="index.html">builder</a>::<wbr><a class="trait" href="#">TypedValueParser</a><button id="copy-path" title="Copy item path to clipboard"><img src="../../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../../src/clap_builder/builder/value_parser.rs.html#749">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>&#x2212;</span>]</button></span></div><pre class="rust item-decl"><code>pub trait TypedValueParser: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static {
type <a href="#associatedtype.Value" class="associatedtype">Value</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>;
// Required method
fn <a href="#tymethod.parse_ref" class="fn">parse_ref</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: &amp;<a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt;;
// Provided methods
fn <a href="#method.parse_ref_" class="fn">parse_ref_</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: &amp;<a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>,
_source: <a class="enum" href="../parser/enum.ValueSource.html" title="enum clap::parser::ValueSource">ValueSource</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.parse" class="fn">parse</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsString.html" title="struct std::ffi::os_str::OsString">OsString</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.parse_" class="fn">parse_</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsString.html" title="struct std::ffi::os_str::OsString">OsString</a>,
_source: <a class="enum" href="../parser/enum.ValueSource.html" title="enum clap::parser::ValueSource">ValueSource</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.possible_values" class="fn">possible_values</a>(
&amp;self
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>&lt;Item = <a class="struct" href="struct.PossibleValue.html" title="struct clap::builder::PossibleValue">PossibleValue</a>&gt; + '_&gt;&gt; { ... }
<span class="item-spacer"></span> fn <a href="#method.map" class="fn">map</a>&lt;T, F&gt;(self, func: F) -&gt; <a class="struct" href="struct.MapValueParser.html" title="struct clap::builder::MapValueParser">MapValueParser</a>&lt;Self, F&gt;
<span class="where">where T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; T + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a></span> { ... }
<span class="item-spacer"></span> fn <a href="#method.try_map" class="fn">try_map</a>&lt;T, E, F&gt;(self, func: F) -&gt; <a class="struct" href="struct.TryMapValueParser.html" title="struct clap::builder::TryMapValueParser">TryMapValueParser</a>&lt;Self, F&gt;
<span class="where">where F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
E: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>&gt;&gt;</span> { ... }
}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Parse/validate argument values</p>
<p>As alternatives to implementing <code>TypedValueParser</code>,</p>
<ul>
<li>Use <code>Fn(&amp;str) -&gt; Result&lt;T, E&gt;</code> which implements <code>TypedValueParser</code></li>
<li><a href="trait.TypedValueParser.html#method.map" title="method clap::builder::TypedValueParser::map"><code>TypedValueParser::map</code></a> or <a href="trait.TypedValueParser.html#method.try_map" title="method clap::builder::TypedValueParser::try_map"><code>TypedValueParser::try_map</code></a> to adapt an existing <code>TypedValueParser</code></li>
</ul>
<p>See <code>ValueParserFactory</code> to register <code>TypedValueParser::Value</code> with
<a href="../macro.value_parser.html" title="macro clap::value_parser"><code>value_parser!</code></a>.</p>
<h2 id="example"><a href="#example">Example</a></h2>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="attr">#[derive(Clone)]
</span><span class="kw">struct </span>Custom(u32);
<span class="attr">#[derive(Clone)]
</span><span class="kw">struct </span>CustomValueParser;
<span class="kw">impl </span>clap::builder::TypedValueParser <span class="kw">for </span>CustomValueParser {
<span class="kw">type </span>Value = Custom;
<span class="kw">fn </span>parse_ref(
<span class="kw-2">&amp;</span><span class="self">self</span>,
cmd: <span class="kw-2">&amp;</span>clap::Command,
arg: <span class="prelude-ty">Option</span>&lt;<span class="kw-2">&amp;</span>clap::Arg&gt;,
value: <span class="kw-2">&amp;</span>std::ffi::OsStr,
) -&gt; <span class="prelude-ty">Result</span>&lt;<span class="self">Self</span>::Value, clap::Error&gt; {
<span class="kw">let </span>inner = <span class="macro">clap::value_parser!</span>(u32);
<span class="kw">let </span>val = inner.parse_ref(cmd, arg, value)<span class="question-mark">?</span>;
<span class="kw">const </span>INVALID_VALUE: u32 = <span class="number">10</span>;
<span class="kw">if </span>val == INVALID_VALUE {
<span class="kw">let </span><span class="kw-2">mut </span>err = clap::Error::new(ErrorKind::ValueValidation)
.with_cmd(cmd);
<span class="kw">if let </span><span class="prelude-val">Some</span>(arg) = arg {
err.insert(ContextKind::InvalidArg, ContextValue::String(arg.to_string()));
}
err.insert(ContextKind::InvalidValue, ContextValue::String(INVALID_VALUE.to_string()));
<span class="kw">return </span><span class="prelude-val">Err</span>(err);
}
<span class="prelude-val">Ok</span>(Custom(val))
}
}</code></pre></div>
</div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Value" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#751">source</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a></h4></section></summary><div class="docblock"><p>Argument’s value type</p>
</div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.parse_ref" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#756-761">source</a><h4 class="code-header">fn <a href="#tymethod.parse_ref" class="fn">parse_ref</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: &amp;<a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt;</h4></section></summary><div class="docblock"><p>Parse the argument value</p>
<p>When <code>arg</code> is <code>None</code>, an external subcommand value is being parsed.</p>
</div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.parse_ref_" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#766-772">source</a><h4 class="code-header">fn <a href="#method.parse_ref_" class="fn">parse_ref_</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: &amp;<a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsStr.html" title="struct std::ffi::os_str::OsStr">OsStr</a>,
_source: <a class="enum" href="../parser/enum.ValueSource.html" title="enum clap::parser::ValueSource">ValueSource</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt;</h4></section></summary><div class="docblock"><p>Parse the argument value</p>
<p>When <code>arg</code> is <code>None</code>, an external subcommand value is being parsed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.parse" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#779-784">source</a><h4 class="code-header">fn <a href="#method.parse" class="fn">parse</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsString.html" title="struct std::ffi::os_str::OsString">OsString</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt;</h4></section></summary><div class="docblock"><p>Parse the argument value</p>
<p>When <code>arg</code> is <code>None</code>, an external subcommand value is being parsed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.parse_" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#791-797">source</a><h4 class="code-header">fn <a href="#method.parse_" class="fn">parse_</a>(
&amp;self,
cmd: &amp;<a class="struct" href="../struct.Command.html" title="struct clap::Command">Command</a>,
arg: <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;&amp;<a class="struct" href="../struct.Arg.html" title="struct clap::Arg">Arg</a>&gt;,
value: <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsString.html" title="struct std::ffi::os_str::OsString">OsString</a>,
_source: <a class="enum" href="../parser/enum.ValueSource.html" title="enum clap::parser::ValueSource">ValueSource</a>
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>, <a class="struct" href="../error/struct.Error.html" title="struct clap::error::Error">Error</a>&gt;</h4></section></summary><div class="docblock"><p>Parse the argument value</p>
<p>When <code>arg</code> is <code>None</code>, an external subcommand value is being parsed.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.possible_values" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#805-807">source</a><h4 class="code-header">fn <a href="#method.possible_values" class="fn">possible_values</a>(
&amp;self
) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>&lt;Item = <a class="struct" href="struct.PossibleValue.html" title="struct clap::builder::PossibleValue">PossibleValue</a>&gt; + '_&gt;&gt;</h4></section></summary><div class="docblock"><p>Reflect on enumerated value properties</p>
<p>Error checking should not be done with this; it is mostly targeted at user-facing
applications like errors and completion.</p>
</div></details><details class="toggle method-toggle" open><summary><section id="method.map" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#848-851">source</a><h4 class="code-header">fn <a href="#method.map" class="fn">map</a>&lt;T, F&gt;(self, func: F) -&gt; <a class="struct" href="struct.MapValueParser.html" title="struct clap::builder::MapValueParser">MapValueParser</a>&lt;Self, F&gt;<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; T + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h4></section></summary><div class="docblock"><p>Adapt a <code>TypedValueParser</code> from one value to another</p>
<h5 id="example-1"><a href="#example-1">Example</a></h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>cmd = Command::new(<span class="string">"mycmd"</span>)
.arg(
Arg::new(<span class="string">"flag"</span>)
.long(<span class="string">"flag"</span>)
.action(clap::ArgAction::SetTrue)
.value_parser(
BoolishValueParser::new()
.map(|b| -&gt; usize {
<span class="kw">if </span>b { <span class="number">10 </span>} <span class="kw">else </span>{ <span class="number">5 </span>}
})
)
);
<span class="kw">let </span>matches = cmd.clone().try_get_matches_from([<span class="string">"mycmd"</span>, <span class="string">"--flag"</span>]).unwrap();
<span class="macro">assert!</span>(matches.contains_id(<span class="string">"flag"</span>));
<span class="macro">assert_eq!</span>(
matches.get_one::&lt;usize&gt;(<span class="string">"flag"</span>).copied(),
<span class="prelude-val">Some</span>(<span class="number">10</span>)
);
<span class="kw">let </span>matches = cmd.try_get_matches_from([<span class="string">"mycmd"</span>]).unwrap();
<span class="macro">assert!</span>(matches.contains_id(<span class="string">"flag"</span>));
<span class="macro">assert_eq!</span>(
matches.get_one::&lt;usize&gt;(<span class="string">"flag"</span>).copied(),
<span class="prelude-val">Some</span>(<span class="number">5</span>)
);</code></pre></div>
</div></details><details class="toggle method-toggle" open><summary><section id="method.try_map" class="method"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#898-902">source</a><h4 class="code-header">fn <a href="#method.try_map" class="fn">try_map</a>&lt;T, E, F&gt;(self, func: F) -&gt; <a class="struct" href="struct.TryMapValueParser.html" title="struct clap::builder::TryMapValueParser">TryMapValueParser</a>&lt;Self, F&gt;<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(Self::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
E: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>&gt;&gt;,</div></h4></section></summary><div class="docblock"><p>Adapt a <code>TypedValueParser</code> from one value to another</p>
<h5 id="example-2"><a href="#example-2">Example</a></h5>
<div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">let </span>cmd = Command::new(<span class="string">"mycmd"</span>)
.arg(
Arg::new(<span class="string">"flag"</span>)
.long(<span class="string">"flag"</span>)
.value_parser(
OsStringValueParser::new()
.try_map(verify_ext)
)
);
<span class="kw">fn </span>verify_ext(os: OsString) -&gt; <span class="prelude-ty">Result</span>&lt;PathBuf, <span class="kw-2">&amp;</span><span class="lifetime">'static </span>str&gt; {
<span class="kw">let </span>path = PathBuf::from(os);
<span class="kw">if </span>path.extension() != <span class="prelude-val">Some</span>(OsStr::new(<span class="string">"rs"</span>)) {
<span class="kw">return </span><span class="prelude-val">Err</span>(<span class="string">"only Rust files are supported"</span>);
}
<span class="prelude-val">Ok</span>(path)
}
<span class="kw">let </span>error = cmd.clone().try_get_matches_from([<span class="string">"mycmd"</span>, <span class="string">"--flag"</span>, <span class="string">"foo.txt"</span>]).unwrap_err();
error.print();
<span class="kw">let </span>matches = cmd.try_get_matches_from([<span class="string">"mycmd"</span>, <span class="string">"--flag"</span>, <span class="string">"foo.rs"</span>]).unwrap();
<span class="macro">assert!</span>(matches.contains_id(<span class="string">"flag"</span>));
<span class="macro">assert_eq!</span>(
matches.get_one::&lt;PathBuf&gt;(<span class="string">"flag"</span>).map(|s| s.as_path()),
<span class="prelude-val">Some</span>(Path::new(<span class="string">"foo.rs"</span>))
);</code></pre></div>
</div></details></div><h2 id="object-safety" class="section-header">Object Safety<a href="#object-safety" class="anchor">§</a></h2><div class="object-safety-info">This trait is <b>not</b> <a href="https://doc.rust-lang.org/1.76.0/reference/items/traits.html#object-safety">object safe</a>.</div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-BoolValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1729">source</a><a href="#impl-TypedValueParser-for-BoolValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.BoolValueParser.html" title="struct clap::builder::BoolValueParser">BoolValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-1" class="associatedtype trait-impl"><a href="#associatedtype.Value-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-BoolishValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1930">source</a><a href="#impl-TypedValueParser-for-BoolishValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.BoolishValueParser.html" title="struct clap::builder::BoolishValueParser">BoolishValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-2" class="associatedtype trait-impl"><a href="#associatedtype.Value-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-FalseyValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1831">source</a><a href="#impl-TypedValueParser-for-FalseyValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.FalseyValueParser.html" title="struct clap::builder::FalseyValueParser">FalseyValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-3" class="associatedtype trait-impl"><a href="#associatedtype.Value-3" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.bool.html">bool</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-NonEmptyStringValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#2013">source</a><a href="#impl-TypedValueParser-for-NonEmptyStringValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.NonEmptyStringValueParser.html" title="struct clap::builder::NonEmptyStringValueParser">NonEmptyStringValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-4" class="associatedtype trait-impl"><a href="#associatedtype.Value-4" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-OsStringValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1000">source</a><a href="#impl-TypedValueParser-for-OsStringValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.OsStringValueParser.html" title="struct clap::builder::OsStringValueParser">OsStringValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-5" class="associatedtype trait-impl"><a href="#associatedtype.Value-5" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/ffi/os_str/struct.OsString.html" title="struct std::ffi::os_str::OsString">OsString</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-PathBufValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1042">source</a><a href="#impl-TypedValueParser-for-PathBufValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.PathBufValueParser.html" title="struct clap::builder::PathBufValueParser">PathBufValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-6" class="associatedtype trait-impl"><a href="#associatedtype.Value-6" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/std/path/struct.PathBuf.html" title="struct std::path::PathBuf">PathBuf</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-PossibleValuesParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1243">source</a><a href="#impl-TypedValueParser-for-PossibleValuesParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.PossibleValuesParser.html" title="struct clap::builder::PossibleValuesParser">PossibleValuesParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-7" class="associatedtype trait-impl"><a href="#associatedtype.Value-7" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-StringValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#952">source</a><a href="#impl-TypedValueParser-for-StringValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.StringValueParser.html" title="struct clap::builder::StringValueParser">StringValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-8" class="associatedtype trait-impl"><a href="#associatedtype.Value-8" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-UnknownArgumentValueParser" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#2224">source</a><a href="#impl-TypedValueParser-for-UnknownArgumentValueParser" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.UnknownArgumentValueParser.html" title="struct clap::builder::UnknownArgumentValueParser">UnknownArgumentValueParser</a></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-9" class="associatedtype trait-impl"><a href="#associatedtype.Value-9" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = <a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/string/struct.String.html" title="struct alloc::string::String">String</a></h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-EnumValueParser%3CE%3E" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1129">source</a><a href="#impl-TypedValueParser-for-EnumValueParser%3CE%3E" class="anchor">§</a><h3 class="code-header">impl&lt;E&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.EnumValueParser.html" title="struct clap::builder::EnumValueParser">EnumValueParser</a>&lt;E&gt;<div class="where">where
E: <a class="trait" href="../trait.ValueEnum.html" title="trait clap::ValueEnum">ValueEnum</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-10" class="associatedtype trait-impl"><a href="#associatedtype.Value-10" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = E</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-F" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#908-912">source</a><a href="#impl-TypedValueParser-for-F" class="anchor">§</a><h3 class="code-header">impl&lt;F, T, E&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for F<div class="where">where
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&amp;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.str.html">str</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
E: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>&gt;&gt;,
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-11" class="associatedtype trait-impl"><a href="#associatedtype.Value-11" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = T</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-MapValueParser%3CP,+F%3E" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#2067-2072">source</a><a href="#impl-TypedValueParser-for-MapValueParser%3CP,+F%3E" class="anchor">§</a><h3 class="code-header">impl&lt;P, F, T&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.MapValueParser.html" title="struct clap::builder::MapValueParser">MapValueParser</a>&lt;P, F&gt;<div class="where">where
P: <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>,
&lt;P as <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>&gt;::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&lt;P as <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>&gt;::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; T + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-12" class="associatedtype trait-impl"><a href="#associatedtype.Value-12" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = T</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-TryMapValueParser%3CP,+F%3E" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#2127-2133">source</a><a href="#impl-TypedValueParser-for-TryMapValueParser%3CP,+F%3E" class="anchor">§</a><h3 class="code-header">impl&lt;P, F, T, E&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.TryMapValueParser.html" title="struct clap::builder::TryMapValueParser">TryMapValueParser</a>&lt;P, F&gt;<div class="where">where
P: <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>,
&lt;P as <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>&gt;::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
F: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/ops/function/trait.Fn.html" title="trait core::ops::function::Fn">Fn</a>(&lt;P as <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a>&gt;::<a class="associatedtype" href="trait.TypedValueParser.html#associatedtype.Value" title="type clap::builder::TypedValueParser::Value">Value</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/1.76.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a>&lt;T, E&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,
E: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a>&lt;<a class="struct" href="https://doc.rust-lang.org/1.76.0/alloc/boxed/struct.Box.html" title="struct alloc::boxed::Box">Box</a>&lt;dyn <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a>&gt;&gt;,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-13" class="associatedtype trait-impl"><a href="#associatedtype.Value-13" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = T</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-RangedI64ValueParser%3CT%3E" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1434-1437">source</a><a href="#impl-TypedValueParser-for-RangedI64ValueParser%3CT%3E" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.RangedI64ValueParser.html" title="struct clap::builder::RangedI64ValueParser">RangedI64ValueParser</a>&lt;T&gt;<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.i64.html">i64</a>&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
&lt;T as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.i64.html">i64</a>&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-14" class="associatedtype trait-impl"><a href="#associatedtype.Value-14" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = T</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TypedValueParser-for-RangedU64ValueParser%3CT%3E" class="impl"><a class="src rightside" href="../../src/clap_builder/builder/value_parser.rs.html#1634-1637">source</a><a href="#impl-TypedValueParser-for-RangedU64ValueParser%3CT%3E" class="anchor">§</a><h3 class="code-header">impl&lt;T&gt; <a class="trait" href="trait.TypedValueParser.html" title="trait clap::builder::TypedValueParser">TypedValueParser</a> for <a class="struct" href="struct.RangedU64ValueParser.html" title="struct clap::builder::RangedU64ValueParser">RangedU64ValueParser</a>&lt;T&gt;<div class="where">where
T: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u64.html">u64</a>&gt; + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,
&lt;T as <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/1.76.0/std/primitive.u64.html">u64</a>&gt;&gt;::<a class="associatedtype" href="https://doc.rust-lang.org/1.76.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static + <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/error/trait.Error.html" title="trait core::error::Error">Error</a> + <a class="trait" href="https://doc.rust-lang.org/1.76.0/alloc/string/trait.ToString.html" title="trait alloc::string::ToString">ToString</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Value-15" class="associatedtype trait-impl"><a href="#associatedtype.Value-15" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Value" class="associatedtype">Value</a> = T</h4></section></div></details></div><script src="../../trait.impl/clap_builder/builder/value_parser/trait.TypedValueParser.js" data-ignore-extern-crates="clap_builder" async></script></section></div></main></body></html>
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