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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="`Dispatch` trace data to a `Subscriber`."><title>Dispatch in tracing_core - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-dd39b87e5fcfba68.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" 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href="../tracing_core/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../tracing_core/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><h2><a href="../tracing_core/index.html">tracing_core</a><span class="version">0.1.32</span></h2></div><h2 class="location"><a href="#">Dispatch</a></h2><div class="sidebar-elems"><section><h3><a href="#implementations">Methods</a></h3><ul class="block method"><li><a href="#method.clone_span">clone_span</a></li><li><a href="#method.current_span">current_span</a></li><li><a href="#method.downcast_ref">downcast_ref</a></li><li><a href="#method.downgrade">downgrade</a></li><li><a href="#method.drop_span">drop_span</a></li><li><a href="#method.enabled">enabled</a></li><li><a href="#method.enter">enter</a></li><li><a href="#method.event">event</a></li><li><a href="#method.exit">exit</a></li><li><a href="#method.is">is</a></li><li><a href="#method.new">new</a></li><li><a href="#method.new_span">new_span</a></li><li><a href="#method.none">none</a></li><li><a href="#method.record">record</a></li><li><a href="#method.record_follows_from">record_follows_from</a></li><li><a href="#method.register_callsite">register_callsite</a></li><li><a href="#method.try_close">try_close</a></li></ul><h3><a href="#trait-implementations">Trait Implementations</a></h3><ul class="block trait-implementation"><li><a href="#impl-Clone-for-Dispatch">Clone</a></li><li><a href="#impl-Debug-for-Dispatch">Debug</a></li><li><a href="#impl-Default-for-Dispatch">Default</a></li><li><a href="#impl-From%3CS%3E-for-Dispatch">From<S></a></li></ul><h3><a href="#synthetic-implementations">Auto Trait Implementations</a></h3><ul class="block synthetic-implementation"><li><a href="#impl-RefUnwindSafe-for-Dispatch">!RefUnwindSafe</a></li><li><a href="#impl-UnwindSafe-for-Dispatch">!UnwindSafe</a></li><li><a href="#impl-Freeze-for-Dispatch">Freeze</a></li><li><a href="#impl-Send-for-Dispatch">Send</a></li><li><a href="#impl-Sync-for-Dispatch">Sync</a></li><li><a href="#impl-Unpin-for-Dispatch">Unpin</a></li></ul><h3><a href="#blanket-implementations">Blanket Implementations</a></h3><ul class="block blanket-implementation"><li><a href="#impl-Any-for-T">Any</a></li><li><a href="#impl-Borrow%3CT%3E-for-T">Borrow<T></a></li><li><a href="#impl-BorrowMut%3CT%3E-for-T">BorrowMut<T></a></li><li><a href="#impl-From%3CT%3E-for-T">From<T></a></li><li><a href="#impl-Into%3CU%3E-for-T">Into<U></a></li><li><a href="#impl-ToOwned-for-T">ToOwned</a></li><li><a href="#impl-TryFrom%3CU%3E-for-T">TryFrom<U></a></li><li><a href="#impl-TryInto%3CU%3E-for-T">TryInto<U></a></li></ul></section><h2><a href="index.html">In crate tracing_core</a></h2></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1>Struct <a href="index.html">tracing_core</a>::<wbr><a class="struct" href="#">Dispatch</a><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><span class="out-of-band"><a class="src" href="../src/tracing_core/dispatcher.rs.html#155-157">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub struct Dispatch { <span class="comment">/* private fields */</span> }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p><code>Dispatch</code> trace data to a <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a>.</p>
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</div></details><h2 id="implementations" class="section-header">Implementations<a href="#implementations" class="anchor">§</a></h2><div id="implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Dispatch" class="impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#465-732">source</a><a href="#impl-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.none" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#468-472">source</a><h4 class="code-header">pub fn <a href="#method.none" class="fn">none</a>() -> Self</h4></section></summary><div class="docblock"><p>Returns a new <code>Dispatch</code> that discards events and spans.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.new" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#477-486">source</a><h4 class="code-header">pub fn <a href="#method.new" class="fn">new</a><S>(subscriber: S) -> Self<div class="where">where
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S: <a class="trait" href="trait.Subscriber.html" title="trait tracing_core::Subscriber">Subscriber</a> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h4></section></summary><div class="docblock"><p>Returns a <code>Dispatch</code> that forwards to the given <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.downgrade" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#507-511">source</a><h4 class="code-header">pub fn <a href="#method.downgrade" class="fn">downgrade</a>(&self) -> <a class="struct" href="dispatcher/struct.WeakDispatch.html" title="struct tracing_core::dispatcher::WeakDispatch">WeakDispatch</a></h4></section></summary><div class="docblock"><p>Creates a <a href="dispatcher/struct.WeakDispatch.html" title="struct tracing_core::dispatcher::WeakDispatch"><code>WeakDispatch</code></a> from this <code>Dispatch</code>.</p>
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<p>A <a href="dispatcher/struct.WeakDispatch.html" title="struct tracing_core::dispatcher::WeakDispatch"><code>WeakDispatch</code></a> is similar to a <a href="struct.Dispatch.html" title="struct tracing_core::Dispatch"><code>Dispatch</code></a>, but it does not prevent
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the underlying <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> from being dropped. Instead, it only permits
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access while other references to the <code>Subscriber</code> exist. This is equivalent
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to the standard library’s <a href="https://doc.rust-lang.org/1.80.0/alloc/sync/struct.Arc.html#method.downgrade" title="associated function alloc::sync::Arc::downgrade"><code>Arc::downgrade</code></a> method, but for <code>Dispatch</code>
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rather than <code>Arc</code>.</p>
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<p>The primary use for creating a <a href="dispatcher/struct.WeakDispatch.html" title="struct tracing_core::dispatcher::WeakDispatch"><code>WeakDispatch</code></a> is to allow a <code>Subscriber</code>
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to hold a cyclical reference to itself without creating a memory leak.
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See <a href="trait.Subscriber.html#avoiding-memory-leaks" title="trait tracing_core::Subscriber">here</a> for details.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.register_callsite" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#530-532">source</a><h4 class="code-header">pub fn <a href="#method.register_callsite" class="fn">register_callsite</a>(
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&self,
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metadata: &'static <a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'static>,
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) -> <a class="struct" href="subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest">Interest</a></h4></section></summary><div class="docblock"><p>Registers a new callsite with this subscriber, returning whether or not
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the subscriber is interested in being notified about the callsite.</p>
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<p>This calls the <a href="trait.Subscriber.html#method.register_callsite" title="method tracing_core::Subscriber::register_callsite"><code>register_callsite</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a>
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that this <code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.new_span" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#560-562">source</a><h4 class="code-header">pub fn <a href="#method.new_span" class="fn">new_span</a>(&self, span: &<a class="struct" href="span/struct.Attributes.html" title="struct tracing_core::span::Attributes">Attributes</a><'_>) -> <a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a></h4></section></summary><div class="docblock"><p>Record the construction of a new span, returning a new <a href="span/struct.Id.html" title="struct tracing_core::span::Id">ID</a> for the
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span being constructed.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.new_span" title="method tracing_core::Subscriber::new_span"><code>new_span</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.record" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#572-574">source</a><h4 class="code-header">pub fn <a href="#method.record" class="fn">record</a>(&self, span: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>, values: &<a class="struct" href="span/struct.Record.html" title="struct tracing_core::span::Record">Record</a><'_>)</h4></section></summary><div class="docblock"><p>Record a set of values on a span.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.record" title="method tracing_core::Subscriber::record"><code>record</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.record_follows_from" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#585-587">source</a><h4 class="code-header">pub fn <a href="#method.record_follows_from" class="fn">record_follows_from</a>(&self, span: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>, follows: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>)</h4></section></summary><div class="docblock"><p>Adds an indication that <code>span</code> follows from the span with the id
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<code>follows</code>.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.record_follows_from" title="method tracing_core::Subscriber::record_follows_from"><code>record_follows_from</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a>
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that this <code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.enabled" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#599-601">source</a><h4 class="code-header">pub fn <a href="#method.enabled" class="fn">enabled</a>(&self, metadata: &<a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'_>) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns true if a span with the specified <a href="struct.Metadata.html" title="struct tracing_core::Metadata">metadata</a> would be
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recorded.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.enabled" title="method tracing_core::Subscriber::enabled"><code>enabled</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.event" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#612-617">source</a><h4 class="code-header">pub fn <a href="#method.event" class="fn">event</a>(&self, event: &<a class="struct" href="struct.Event.html" title="struct tracing_core::Event">Event</a><'_>)</h4></section></summary><div class="docblock"><p>Records that an <a href="struct.Event.html" title="struct tracing_core::Event"><code>Event</code></a> has occurred.</p>
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<p>This calls the <a href="struct.Event.html" title="struct tracing_core::Event"><code>event</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.enter" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#626-628">source</a><h4 class="code-header">pub fn <a href="#method.enter" class="fn">enter</a>(&self, span: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>)</h4></section></summary><div class="docblock"><p>Records that a span has been can_enter.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.enter" title="method tracing_core::Subscriber::enter"><code>enter</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.exit" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#637-639">source</a><h4 class="code-header">pub fn <a href="#method.exit" class="fn">exit</a>(&self, span: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>)</h4></section></summary><div class="docblock"><p>Records that a span has been exited.</p>
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<p>This calls the <a href="trait.Subscriber.html#tymethod.exit" title="method tracing_core::Subscriber::exit"><code>exit</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.clone_span" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#656-658">source</a><h4 class="code-header">pub fn <a href="#method.clone_span" class="fn">clone_span</a>(&self, id: &<a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>) -> <a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a></h4></section></summary><div class="docblock"><p>Notifies the subscriber that a <a href="span/struct.Id.html" title="struct tracing_core::span::Id">span ID</a> has been cloned.</p>
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<p>This function must only be called with span IDs that were returned by
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this <code>Dispatch</code>’s <a href="trait.Subscriber.html#tymethod.new_span" title="method tracing_core::Subscriber::new_span"><code>new_span</code></a> function. The <code>tracing</code> crate upholds
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this guarantee and any other libraries implementing instrumentation APIs
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must as well.</p>
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<p>This calls the <a href="trait.Subscriber.html#method.clone_span" title="method tracing_core::Subscriber::clone_span"><code>clone_span</code></a> function on the <code>Subscriber</code> that this
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<code>Dispatch</code> forwards to.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.drop_span" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#684-687">source</a><h4 class="code-header">pub fn <a href="#method.drop_span" class="fn">drop_span</a>(&self, id: <a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>)</h4></section><span class="item-info"><div class="stab deprecated"><span class="emoji">👎</span><span>Deprecated since 0.1.2: use <code>Dispatch::try_close</code> instead</span></div></span></summary><div class="docblock"><p>Notifies the subscriber that a <a href="span/struct.Id.html" title="struct tracing_core::span::Id">span ID</a> has been dropped.</p>
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<p>This function must only be called with span IDs that were returned by
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this <code>Dispatch</code>’s <a href="trait.Subscriber.html#tymethod.new_span" title="method tracing_core::Subscriber::new_span"><code>new_span</code></a> function. The <code>tracing</code> crate upholds
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this guarantee and any other libraries implementing instrumentation APIs
|
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must as well.</p>
|
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<p>This calls the <a href="trait.Subscriber.html#method.drop_span" title="method tracing_core::Subscriber::drop_span"><code>drop_span</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
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<code>Dispatch</code> forwards to.</p>
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<pre class="compile_fail" style="white-space:normal;font:inherit;">
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<strong>Deprecated</strong>: The <a href="#method.try_close"><code>
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try_close</code></a> method is functionally identical, but returns
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<code>true</code> if the span is now closed. It should be used
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instead of this method.
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||
</pre>
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.try_close" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#704-706">source</a><h4 class="code-header">pub fn <a href="#method.try_close" class="fn">try_close</a>(&self, id: <a class="struct" href="span/struct.Id.html" title="struct tracing_core::span::Id">Id</a>) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Notifies the subscriber that a <a href="span/struct.Id.html" title="struct tracing_core::span::Id">span ID</a> has been dropped, and returns
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<code>true</code> if there are now 0 IDs referring to that span.</p>
|
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<p>This function must only be called with span IDs that were returned by
|
||
this <code>Dispatch</code>’s <a href="trait.Subscriber.html#tymethod.new_span" title="method tracing_core::Subscriber::new_span"><code>new_span</code></a> function. The <code>tracing</code> crate upholds
|
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this guarantee and any other libraries implementing instrumentation APIs
|
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must as well.</p>
|
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<p>This calls the <a href="trait.Subscriber.html#method.try_close" title="method tracing_core::Subscriber::try_close"><code>try_close</code></a> function on the <a href="trait.Subscriber.html" title="trait tracing_core::Subscriber"><code>Subscriber</code></a> that this
|
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<code>Dispatch</code> forwards to.</p>
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.current_span" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#715-717">source</a><h4 class="code-header">pub fn <a href="#method.current_span" class="fn">current_span</a>(&self) -> <a class="struct" href="span/struct.Current.html" title="struct tracing_core::span::Current">Current</a></h4></section></summary><div class="docblock"><p>Returns a type representing this subscriber’s view of the current span.</p>
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<p>This calls the <a href="trait.Subscriber.html#method.current_span" title="method tracing_core::Subscriber::current_span"><code>current</code></a> function on the <code>Subscriber</code> that this
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<code>Dispatch</code> forwards to.</p>
|
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</div></details><details class="toggle method-toggle" open><summary><section id="method.is" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#722-724">source</a><h4 class="code-header">pub fn <a href="#method.is" class="fn">is</a><T: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a>>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.bool.html">bool</a></h4></section></summary><div class="docblock"><p>Returns <code>true</code> if this <code>Dispatch</code> forwards to a <code>Subscriber</code> of type
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<code>T</code>.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="method.downcast_ref" class="method"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#729-731">source</a><h4 class="code-header">pub fn <a href="#method.downcast_ref" class="fn">downcast_ref</a><T: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a>>(&self) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&T</a>></h4></section></summary><div class="docblock"><p>Returns some reference to the <code>Subscriber</code> this <code>Dispatch</code> forwards to
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if it is of type <code>T</code>, or <code>None</code> if it isn’t.</p>
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</div></details></div></details></div><h2 id="trait-implementations" class="section-header">Trait Implementations<a href="#trait-implementations" class="anchor">§</a></h2><div id="trait-implementations-list"><details class="toggle implementors-toggle" open><summary><section id="impl-Clone-for-Dispatch" class="impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#154">source</a><a href="#impl-Clone-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.clone" class="method trait-impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#154">source</a><a href="#method.clone" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html#tymethod.clone" class="fn">clone</a>(&self) -> <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h4></section></summary><div class='docblock'>Returns a copy of the value. <a href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_from" class="method trait-impl"><span class="rightside"><span class="since" title="Stable since Rust version 1.0.0">1.0.0</span> · <a class="src" href="https://doc.rust-lang.org/1.80.0/src/core/clone.rs.html#169">source</a></span><a href="#method.clone_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html#method.clone_from" class="fn">clone_from</a>(&mut self, source: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&Self</a>)</h4></section></summary><div class='docblock'>Performs copy-assignment from <code>source</code>. <a href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Debug-for-Dispatch" class="impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#741-754">source</a><a href="#impl-Debug-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html" title="trait core::fmt::Debug">Debug</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.fmt" class="method trait-impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#742-753">source</a><a href="#method.fmt" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt" class="fn">fmt</a>(&self, f: &mut <a class="struct" href="https://doc.rust-lang.org/1.80.0/core/fmt/struct.Formatter.html" title="struct core::fmt::Formatter">Formatter</a><'_>) -> <a class="type" href="https://doc.rust-lang.org/1.80.0/core/fmt/type.Result.html" title="type core::fmt::Result">Result</a></h4></section></summary><div class='docblock'>Formats the value using the given formatter. <a href="https://doc.rust-lang.org/1.80.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-Default-for-Dispatch" class="impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#734-739">source</a><a href="#impl-Default-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html" title="trait core::default::Default">Default</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.default" class="method trait-impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#736-738">source</a><a href="#method.default" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/default/trait.Default.html#tymethod.default" class="fn">default</a>() -> Self</h4></section></summary><div class="docblock"><p>Returns the current default dispatcher</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle" open><summary><section id="impl-From%3CS%3E-for-Dispatch" class="impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#756-764">source</a><a href="#impl-From%3CS%3E-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl<S> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><S> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a><div class="where">where
|
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S: <a class="trait" href="trait.Subscriber.html" title="trait tracing_core::Subscriber">Subscriber</a> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> + <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> + 'static,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from" class="method trait-impl"><a class="src rightside" href="../src/tracing_core/dispatcher.rs.html#761-763">source</a><a href="#method.from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(subscriber: S) -> Self</h4></section></summary><div class='docblock'>Converts to this type from the input type.</div></details></div></details></div><h2 id="synthetic-implementations" class="section-header">Auto Trait Implementations<a href="#synthetic-implementations" class="anchor">§</a></h2><div id="synthetic-implementations-list"><section id="impl-Freeze-for-Dispatch" class="impl"><a href="#impl-Freeze-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Freeze.html" title="trait core::marker::Freeze">Freeze</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section><section id="impl-RefUnwindSafe-for-Dispatch" class="impl"><a href="#impl-RefUnwindSafe-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.RefUnwindSafe.html" title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section><section id="impl-Send-for-Dispatch" class="impl"><a href="#impl-Send-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Send.html" title="trait core::marker::Send">Send</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section><section id="impl-Sync-for-Dispatch" class="impl"><a href="#impl-Sync-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section><section id="impl-Unpin-for-Dispatch" class="impl"><a href="#impl-Unpin-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Unpin.html" title="trait core::marker::Unpin">Unpin</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section><section id="impl-UnwindSafe-for-Dispatch" class="impl"><a href="#impl-UnwindSafe-for-Dispatch" class="anchor">§</a><h3 class="code-header">impl !<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/panic/unwind_safe/trait.UnwindSafe.html" title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <a class="struct" href="struct.Dispatch.html" title="struct tracing_core::Dispatch">Dispatch</a></h3></section></div><h2 id="blanket-implementations" class="section-header">Blanket Implementations<a href="#blanket-implementations" class="anchor">§</a></h2><div id="blanket-implementations-list"><details class="toggle implementors-toggle"><summary><section id="impl-Any-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/any.rs.html#140">source</a><a href="#impl-Any-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html" title="trait core::any::Any">Any</a> for T<div class="where">where
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T: 'static + ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.type_id" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/any.rs.html#141">source</a><a href="#method.type_id" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html#tymethod.type_id" class="fn">type_id</a>(&self) -> <a class="struct" href="https://doc.rust-lang.org/1.80.0/core/any/struct.TypeId.html" title="struct core::any::TypeId">TypeId</a></h4></section></summary><div class='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <a href="https://doc.rust-lang.org/1.80.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Borrow%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#208">source</a><a href="#impl-Borrow%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html" title="trait core::borrow::Borrow">Borrow</a><T> for T<div class="where">where
|
||
T: ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#210">source</a><a href="#method.borrow" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow" class="fn">borrow</a>(&self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&T</a></h4></section></summary><div class='docblock'>Immutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-BorrowMut%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#216">source</a><a href="#impl-BorrowMut%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html" title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<div class="where">where
|
||
T: ?<a class="trait" href="https://doc.rust-lang.org/1.80.0/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.borrow_mut" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/borrow.rs.html#217">source</a><a href="#method.borrow_mut" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut" class="fn">borrow_mut</a>(&mut self) -> <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&mut T</a></h4></section></summary><div class='docblock'>Mutably borrows from an owned value. <a href="https://doc.rust-lang.org/1.80.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-From%3CT%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#765">source</a><a href="#impl-From%3CT%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for T</h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.from-1" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#768">source</a><a href="#method.from-1" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html#tymethod.from" class="fn">from</a>(t: T) -> T</h4></section></summary><div class="docblock"><p>Returns the argument unchanged.</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-Into%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#748-750">source</a><a href="#impl-Into%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><U> for T<div class="where">where
|
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle method-toggle" open><summary><section id="method.into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#758">source</a><a href="#method.into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html#tymethod.into" class="fn">into</a>(self) -> U</h4></section></summary><div class="docblock"><p>Calls <code>U::from(self)</code>.</p>
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<p>That is, this conversion is whatever the implementation of
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<code><a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.From.html" title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
|
||
</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-ToOwned-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#83-85">source</a><a href="#impl-ToOwned-for-T" class="anchor">§</a><h3 class="code-header">impl<T> <a class="trait" href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html" title="trait alloc::borrow::ToOwned">ToOwned</a> for T<div class="where">where
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T: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Owned" class="associatedtype trait-impl"><a href="#associatedtype.Owned" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned" class="associatedtype">Owned</a> = T</h4></section></summary><div class='docblock'>The resulting type after obtaining ownership.</div></details><details class="toggle method-toggle" open><summary><section id="method.to_owned" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#88">source</a><a href="#method.to_owned" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned" class="fn">to_owned</a>(&self) -> T</h4></section></summary><div class='docblock'>Creates owned data from borrowed data, usually by cloning. <a href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><details class="toggle method-toggle" open><summary><section id="method.clone_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/alloc/borrow.rs.html#92">source</a><a href="#method.clone_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#method.clone_into" class="fn">clone_into</a>(&self, target: <a class="primitive" href="https://doc.rust-lang.org/1.80.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><div class='docblock'>Uses borrowed data to replace owned data, usually by cloning. <a href="https://doc.rust-lang.org/1.80.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryFrom%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#805-807">source</a><a href="#impl-TryFrom%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.Into.html" title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error" class="associatedtype trait-impl"><a href="#associatedtype.Error" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" class="associatedtype">Error</a> = <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/convert/enum.Infallible.html" title="enum core::convert::Infallible">Infallible</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_from" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#812">source</a><a href="#method.try_from" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#tymethod.try_from" class="fn">try_from</a>(value: U) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><T, <T as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><U>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details><details class="toggle implementors-toggle"><summary><section id="impl-TryInto%3CU%3E-for-T" class="impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#790-792">source</a><a href="#impl-TryInto%3CU%3E-for-T" class="anchor">§</a><h3 class="code-header">impl<T, U> <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html" title="trait core::convert::TryInto">TryInto</a><U> for T<div class="where">where
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U: <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><div class="impl-items"><details class="toggle" open><summary><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#associatedtype.Error" class="associatedtype">Error</a> = <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><div class='docblock'>The type returned in the event of a conversion error.</div></details><details class="toggle method-toggle" open><summary><section id="method.try_into" class="method trait-impl"><a class="src rightside" href="https://doc.rust-lang.org/1.80.0/src/core/convert/mod.rs.html#797">source</a><a href="#method.try_into" class="anchor">§</a><h4 class="code-header">fn <a href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryInto.html#tymethod.try_into" class="fn">try_into</a>(self) -> <a class="enum" href="https://doc.rust-lang.org/1.80.0/core/result/enum.Result.html" title="enum core::result::Result">Result</a><U, <U as <a class="trait" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html" title="trait core::convert::TryFrom">TryFrom</a><T>>::<a class="associatedtype" href="https://doc.rust-lang.org/1.80.0/core/convert/trait.TryFrom.html#associatedtype.Error" title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><div class='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html> |