<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="A fluent builder to construct a [`SessionMiddleware`] instance with custom configuration parameters."><metaname="keywords"content="rust, rustlang, rust-lang, SessionMiddlewareBuilder"><title>SessionMiddlewareBuilder in actix_session - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceSerif4-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../FiraSans-Regular.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../FiraSans-Medium.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceCodePro-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceSerif4-Bold.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../SourceCodePro-Semibold.ttf.woff2"><linkrel="stylesheet"type="text/css"href="../normalize.css"><linkrel="stylesheet"type="text/css"href="../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../ayu.css"disabled><linkrel="stylesheet"type="text/css"href="../dark.css"disabled><linkrel="stylesheet"type="text/css"href="../light.css"id="themeStyle"><scriptid="default-settings"></script><scriptsrc="../storage.js"></script><scriptsrc="../crates.js"></script><scriptdefersrc="../main.js"></script>
<noscript><linkrel="stylesheet"href="../noscript.css"></noscript><linkrel="icon"href="https://actix.rs/favicon.ico"></head><bodyclass="rustdoc struct"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle">☰</button><aclass="sidebar-logo"href="../actix_session/index.html"><divclass="logo-container"><imgsrc="https://actix.rs/img/logo.png"alt="logo"></div>
<imgsrc="https://actix.rs/img/logo.png"alt="logo"></a><navclass="sub"><divclass="theme-picker hidden"><buttonid="theme-picker"aria-label="Pick another theme!"aria-haspopup="menu"title="themes"><imgwidth="22"height="22"alt="Pick another theme!"src="../brush.svg"></button><divid="theme-choices"role="menu"></div></div><formclass="search-form"><divclass="search-container"><span></span><inputclass="search-input"name="search"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><buttontype="button"id="help-button"title="help">?</button><aid="settings-menu"href="../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../wheel.svg"></a></div></form></nav></div><sectionid="main-content"class="content"><divclass="main-heading">
<h1class="fqn"><spanclass="in-band">Struct <ahref="index.html">actix_session</a>::<wbr><aclass="struct"href="#">SessionMiddlewareBuilder</a><buttonid="copy-path"onclick="copy_path(this)"title="Copy item path to clipboard"><imgsrc="../clipboard.svg"width="19"height="18"alt="Copy item path"></button></span></h1><spanclass="out-of-band"><aclass="srclink"href="../src/actix_session/middleware.rs.html#256-259">source</a> · <aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass="inner">−</span>]</a></span></div><divclass="docblock item-decl"><preclass="rust struct"><code>pub struct SessionMiddlewareBuilder<Store: <aclass="trait"href="storage/trait.SessionStore.html"title="trait actix_session::storage::SessionStore">SessionStore</a>> { /* private fields */ }</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>A fluent builder to construct a <ahref="struct.SessionMiddleware.html"title="SessionMiddleware"><code>SessionMiddleware</code></a> instance with custom configuration
parameters.</p>
</div></details><h2id="implementations"class="small-section-header">Implementations<ahref="#implementations"class="anchor"></a></h2><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#261-366">source</a></span><ahref="#impl"class="anchor"></a><h3class="code-header in-band">impl<Store: <aclass="trait"href="storage/trait.SessionStore.html"title="trait actix_session::storage::SessionStore">SessionStore</a>><aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_name"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#265-268">source</a></span><ahref="#method.cookie_name"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_name"class="fnname">cookie_name</a>(self, name: <aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html"title="struct alloc::string::String">String</a>) -> Self</h4></section></summary><divclass="docblock"><p>Set the name of the cookie used to store the session ID.</p>
<p>Defaults to <code>id</code>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_secure"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#276-279">source</a></span><ahref="#method.cookie_secure"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_secure"class="fnname">cookie_secure</a>(self, secure: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> Self</h4></section></summary><divclass="docblock"><p>Set the <code>Secure</code> attribute for the cookie used to store the session ID.</p>
<p>If the cookie is set as secure, it will only be transmitted when the connection is secure
(using <code>https</code>).</p>
<p>Default is <code>true</code>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.session_length"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#285-299">source</a></span><ahref="#method.session_length"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.session_length"class="fnname">session_length</a>(self, session_length: <aclass="enum"href="enum.SessionLength.html"title="enum actix_session::SessionLength">SessionLength</a>) -> Self</h4></section></summary><divclass="docblock"><p>Determine how long a session should last - check out <ahref="enum.SessionLength.html"title="SessionLength"><code>SessionLength</code></a>’s documentation for
more details on the available options.</p>
<p>Default is <ahref="enum.SessionLength.html#variant.BrowserSession"title="SessionLength::BrowserSession"><code>SessionLength::BrowserSession</code></a>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_same_site"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#304-307">source</a></span><ahref="#method.cookie_same_site"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_same_site"class="fnname">cookie_same_site</a>(self, same_site: <aclass="enum"href="https://docs.rs/cookie/0.16/cookie/draft/enum.SameSite.html"title="enum cookie::draft::SameSite">SameSite</a>) -> Self</h4></section></summary><divclass="docblock"><p>Set the <code>SameSite</code> attribute for the cookie used to store the session ID.</p>
<p>By default, the attribute is set to <code>Lax</code>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_path"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#312-315">source</a></span><ahref="#method.cookie_path"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_path"class="fnname">cookie_path</a>(self, path: <aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html"title="struct alloc::string::String">String</a>) -> Self</h4></section></summary><divclass="docblock"><p>Set the <code>Path</code> attribute for the cookie used to store the session ID.</p>
<p>By default, the attribute is set to <code>/</code>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_domain"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#323-326">source</a></span><ahref="#method.cookie_domain"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_domain"class="fnname">cookie_domain</a>(self, domain: <aclass="enum"href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html"title="enum core::option::Option">Option</a><<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/string/struct.String.html"title="struct alloc::string::String">String</a>>) -> Self</h4></section></summary><divclass="docblock"><p>Set the <code>Domain</code> attribute for the cookie used to store the session ID.</p>
<p>Use <code>None</code> to leave the attribute unspecified. If unspecified, the attribute defaults
to the same host that set the cookie, excluding subdomains.</p>
<p>By default, the attribute is left unspecified.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_content_security"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#342-345">source</a></span><ahref="#method.cookie_content_security"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_content_security"class="fnname">cookie_content_security</a>(<br> self, <br> content_security: <aclass="enum"href="enum.CookieContentSecurity.html"title="enum actix_session::CookieContentSecurity">CookieContentSecurity</a><br>) -> Self</h4></section></summary><divclass="docblock"><p>Choose how the session cookie content should be secured.</p>
<ul>
<li><code>CookieContentSecurity::Private</code> translates into an encrypted cookie content.</li>
<li><code>CookieContentSecurity::Signed</code> translates into a signed cookie content.</li>
<p>By default, the cookie content is encrypted. Encrypted was chosen instead of signed as
default because it reduces the chances of sensitive information being exposed in the session
key by accident, regardless of <ahref="storage/trait.SessionStore.html"title="SessionStore"><code>SessionStore</code></a> implementation you chose to use.</p>
<p>For example, if you are using cookie-based storage, you definitely want the cookie content
to be encrypted—the whole session state is embedded in the cookie! If you are using
Redis-based storage, signed is more than enough - the cookie content is just a unique
tamper-proof session key.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.cookie_http_only"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#353-356">source</a></span><ahref="#method.cookie_http_only"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.cookie_http_only"class="fnname">cookie_http_only</a>(self, http_only: <aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>) -> Self</h4></section></summary><divclass="docblock"><p>Set the <code>HttpOnly</code> attribute for the cookie used to store the session ID.</p>
<p>If the cookie is set as <code>HttpOnly</code>, it will not be visible to any JavaScript snippets
running in the browser.</p>
<p>Default is <code>true</code>.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.build"class="method has-srclink"><spanclass="rightside"><aclass="srclink"href="../src/actix_session/middleware.rs.html#360-365">source</a></span><ahref="#method.build"class="anchor"></a><h4class="code-header">pub fn <ahref="#method.build"class="fnname">build</a>(self) -><aclass="struct"href="struct.SessionMiddleware.html"title="struct actix_session::SessionMiddleware">SessionMiddleware</a><Store></h4></section></summary><divclass="docblock"><p>Finalise the builder and return a <ahref="struct.SessionMiddleware.html"title="SessionMiddleware"><code>SessionMiddleware</code></a> instance.</p>
</div></details></div></details><h2id="synthetic-implementations"class="small-section-header">Auto Trait Implementations<ahref="#synthetic-implementations"class="anchor"></a></h2><divid="synthetic-implementations-list"><sectionid="impl-RefUnwindSafe"class="impl has-srclink"><ahref="#impl-RefUnwindSafe"class="anchor"></a><h3class="code-header in-band">impl<Store><aclass="trait"href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html"title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store><spanclass="where fmt-newline">where<br> Store: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html"title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>, </span></h3></section><sectionid="impl-Send"class="impl has-srclink"><ahref="#impl-Send"class="anchor"></a><h3class="code-header in-band">impl<Store> !<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a> for <aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store></h3></section><sectionid="impl-Sync"class="impl has-srclink"><ahref="#impl-Sync"class="anchor"></a><h3class="code-header in-band">impl<Store> !<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sync.html"title="trait core::marker::Sync">Sync</a> for <aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store></h3></section><sectionid="impl-Unpin"class="impl has-srclink"><ahref="#impl-Unpin"class="anchor"></a><h3class="code-header in-band">impl<Store><aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Unpin.html"title="trait core::marker::Unpin">Unpin</a> for <aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store></h3></section><sectionid="impl-UnwindSafe"class="impl has-srclink"><ahref="#impl-UnwindSafe"class="anchor"></a><h3class="code-header in-band">impl<Store><aclass="trait"href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.UnwindSafe.html"title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <aclass="struct"href="struct.SessionMiddlewareBuilder.html"title="struct actix_session::SessionMiddlewareBuilder">SessionMiddlewareBuilder</a><Store><spanclass="where fmt-newline">where<br> Store: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/panic/unwind_safe/trait.RefUnwindSafe.html"title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>, </span></h3></section></div><h2id="blanket-implementations"class="small-section-header">Blanket Implementations<ahref="#blanket-implementations"class="anchor"></a></h2><divid="blanket-implementations-list"><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Any"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/any.rs.html#132-136">source</a></span><ahref="#impl-Any"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/any/trait.Any.html"title="trait core::any::Any">Any</a> for T <spanclass="where fmt-newline">where<br> T: 'static + ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Borrow%3CT%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#209-214">source</a></span><ahref="#impl-Borrow%3CT%3E"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html"title="trait core::borrow::Borrow">Borrow</a><T> for T <spanclass="where fmt-newline">where<br> T: ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.borrow"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/91522"title="Tracking issue for const_borrow">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#211">source</a></span><ahref="#method.borrow"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow"class="fnname">borrow</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>T</h4></section></summary><divclass='docblock'><p>Immutably borrows from an owned value. <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-BorrowMut%3CT%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#218-222">source</a></span><ahref="#impl-BorrowMut%3CT%3E"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html"title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T <spanclass="where fmt-newline">where<br> T: ?<aclass="trait"href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.borrow_mut"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/91522"title="Tracking issue for const_borrow">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/borrow.rs.html#219">source</a></span><ahref="#method.borrow_mut"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut"class="fnname">borrow_mut</a>(&mut self) -><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut </a>T</h4></section></summary><divclass='docblock'><p>Mutably borrows from an owned value. <ahref="https://doc.rust-lang.org/nightly/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-From%3CT%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-558">source</a></span><ahref="#impl-From%3CT%3E"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="trait core::convert::From">From</a><T> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.from"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#555">source</a></span><ahref="#method.from"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from"class="fnname">from</a>(t: T) -> T</h4></section></summary><divclass="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Instrument"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#276">source</a></span><ahref="#impl-Instrument"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.Instrument.html"title="trait tracing::instrument::Instrument">Instrument</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.instrument"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#82">source</a></span><ahref="#method.instrument"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.Instrument.html#method.instrument"class="fnname">instrument</a>(self, span: <aclass="struct"href="https://docs.rs/tracing/0.1.31/tracing/span/struct.Span.html"title="struct tracing::span::Span">Span</a>) -><aclass="struct"href="https://docs.rs/tracing/0.1.31/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><divclass='docblock'><p>Instruments this type with the provided <ahref="https://docs.rs/tracing/0.1.31/tracing/span/struct.Span.html"title="Span"><code>Span</code></a>, returning an
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.in_current_span"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#121">source</a></span><ahref="#method.in_current_span"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.Instrument.html#method.in_current_span"class="fnname">in_current_span</a>(self) -><aclass="struct"href="https://docs.rs/tracing/0.1.31/tracing/instrument/struct.Instrumented.html"title="struct tracing::instrument::Instrumented">Instrumented</a><Self></h4></section></summary><divclass='docblock'><p>Instruments this type with the <ahref="https://docs.rs/tracing/0.1.31/tracing/span/struct.Span.html#method.current">current</a><ahref="https://docs.rs/tracing/0.1.31/tracing/span/struct.Span.html"><code>Span</code></a>, returning an
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Into%3CU%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#537-548">source</a></span><ahref="#impl-Into%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="trait core::convert::From">From</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.into"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#545">source</a></span><ahref="#method.into"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into"class="fnname">into</a>(self) -> U</h4></section></summary><divclass="docblock"><p>Calls <code>U::from(self)</code>.</p>
<p>That is, this conversion is whatever the implementation of
<code><ahref="https://doc.rust-lang.org/nightly/core/convert/trait.From.html"title="From">From</a><T> for U</code> chooses to do.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-Same%3CT%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/typenum/1.15.0/src/typenum/type_operators.rs.html#34-36">source</a></span><ahref="#impl-Same%3CT%3E"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/typenum/1.15.0/typenum/type_operators/trait.Same.html"title="trait typenum::type_operators::Same">Same</a><T> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Output"class="type trait-impl has-srclink"><ahref="#associatedtype.Output"class="anchor"></a><h4class="code-header">type <ahref="https://docs.rs/typenum/1.15.0/typenum/type_operators/trait.Same.html#associatedtype.Output"class="associatedtype">Output</a> = T</h4></section></summary><divclass='docblock'><p>Should always be <code>Self</code></p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-TryFrom%3CU%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#594-603">source</a></span><ahref="#impl-TryFrom%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Error-1"class="type trait-impl has-srclink"><ahref="#associatedtype.Error-1"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"class="associatedtype">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></section></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.try_from"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#600">source</a></span><ahref="#method.try_from"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#tymethod.try_from"class="fnname">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-TryInto%3CU%3E"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#579-588">source</a></span><ahref="#impl-TryInto%3CU%3E"class="anchor"></a><h3class="code-header in-band">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T <spanclass="where fmt-newline">where<br> U: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>, </span></h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle"open><summary><sectionid="associatedtype.Error"class="type trait-impl has-srclink"><ahref="#associatedtype.Error"class="anchor"></a><h4class="code-header">type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error"class="associatedtype">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.try_into"class="method trait-impl has-srclink"><spanclass="rightside"><spanclass="since"title="const unstable">const: <ahref="https://github.com/rust-lang/rust/issues/88674"title="Tracking issue for const_convert">unstable</a></span> · <aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#585">source</a></span><ahref="#method.try_into"class="anchor"></a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#tymethod.try_into"class="fnname">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'><p>Performs the conversion.</p>
</div></details></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-VZip%3CV%3E"class="impl has-srclink"><ahref="#impl-VZip%3CV%3E"class="anchor"></a><h3class="code-header in-band">impl<V, T> VZip<V> for T <spanclass="where fmt-newline">where<br> V: MultiLane<T>, </span></h3></section></summary><divclass="impl-items"><sectionid="method.vzip"class="method trait-impl has-srclink"><ahref="#method.vzip"class="anchor"></a><h4class="code-header">fn <aclass="fnname">vzip</a>(self) -> V</h4></section></div></details><detailsclass="rustdoc-toggle implementors-toggle"open><summary><sectionid="impl-WithSubscriber"class="impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#334">source</a></span><ahref="#impl-WithSubscriber"class="anchor"></a><h3class="code-header in-band">impl<T><aclass="trait"href="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.WithSubscriber.html"title="trait tracing::instrument::WithSubscriber">WithSubscriber</a> for T</h3></section></summary><divclass="impl-items"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.with_subscriber"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#169-171">source</a></span><ahref="#method.with_subscriber"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.WithSubscriber.html#method.with_subscriber"class="fnname">with_subscriber</a><S>(self, subscriber: S) -><aclass="struct"href="https://docs.rs/tracing/0.1.31/tracing/instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self><spanclass="where fmt-newline">where<br> S: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><<aclass="struct"href="https://docs.rs/tracing-core/0.1.22/tracing_core/dispatcher/struct.Dispatch.html"title="struct tracing_core::dispatcher::Dispatch">Dispatch</a>>, </span></h4></section></summary><divclass='docblock'><p>Attaches the provided <ahref="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
</div></details><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="method.with_current_subscriber"class="method trait-impl has-srclink"><spanclass="rightside"><aclass="srclink"href="https://docs.rs/tracing/0.1.31/src/tracing/instrument.rs.html#221">source</a></span><ahref="#method.with_current_subscriber"class="anchor"></a><h4class="code-header">fn <ahref="https://docs.rs/tracing/0.1.31/tracing/instrument/trait.WithSubscriber.html#method.with_current_subscriber"class="fnname">with_current_subscriber</a>(self) -><aclass="struct"href="https://docs.rs/tracing/0.1.31/tracing/instrument/struct.WithDispatch.html"title="struct tracing::instrument::WithDispatch">WithDispatch</a><Self></h4></section></summary><divclass='docblock'><p>Attaches the current <ahref="https://docs.rs/tracing/0.1.31/tracing/dispatcher/index.html#setting-the-default-subscriber">default</a><ahref="https://docs.rs/tracing-core/0.1.22/tracing_core/subscriber/trait.Subscriber.html"><code>Subscriber</code></a> to this type, returning a
