<main><divclass="width-limiter"><navclass="sub"><formclass="search-form"><span></span><divid="sidebar-button"tabindex="-1"><ahref="../../once_cell/all.html"title="show sidebar"></a></div><inputclass="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"><divid="help-button"tabindex="-1"><ahref="../../help.html"title="help">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><sectionid="main-content"class="content"><divclass="main-heading"><h1>Struct <ahref="../index.html">once_cell</a>::<wbr><ahref="index.html">sync</a>::<wbr><aclass="struct"href="#">OnceCell</a><buttonid="copy-path"title="Copy item path to clipboard"><imgsrc="../../static.files/clipboard-7571035ce49a181d.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="src"href="../../src/once_cell/lib.rs.html#901">source</a> · <buttonid="toggle-all-docs"title="collapse all docs">[<span>−</span>]</button></span></div><preclass="rust item-decl"><code>pub struct OnceCell<T>(<spanclass="comment">/* private fields */</span>);</code></pre><detailsclass="toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>A thread-safe cell which can be written to only once.</p>
<p><code>OnceCell</code> provides <code>&</code> references to the contents without RAII guards.</p>
<p>Reading a non-<code>None</code> value out of <code>OnceCell</code> establishes a
happens-before relationship with a corresponding write. For example, if
thread A initializes the cell with <code>get_or_init(f)</code>, and thread B
subsequently reads the result of this call, B also observes all the side
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.get"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#963-970">source</a><h4class="code-header">pub fn <ahref="#method.get"class="fn">get</a>(&self) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html"title="enum core::option::Option">Option</a><<aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a>></h4></section></summary><divclass="docblock"><p>Gets the reference to the underlying value.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.wait"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#993-1001">source</a><h4class="code-header">pub fn <ahref="#method.wait"class="fn">wait</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a></h4></section></summary><divclass="docblock"><p>Gets the reference to the underlying value, blocking the current
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.get_unchecked"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#1031-1033">source</a><h4class="code-header">pub unsafe fn <ahref="#method.get_unchecked"class="fn">get_unchecked</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a></h4></section></summary><divclass="docblock"><p>Get the reference to the underlying value, without checking if the
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.set"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#1058-1063">source</a><h4class="code-header">pub fn <ahref="#method.set"class="fn">set</a>(&self, value: T) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><<aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.unit.html">()</a>, T></h4></section></summary><divclass="docblock"><p>Sets the contents of this cell to <code>value</code>.</p>
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_insert"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#1080-1087">source</a><h4class="code-header">pub fn <ahref="#method.try_insert"class="fn">try_insert</a>(&self, value: T) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><<aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a>, (<aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a>, T)></h4></section></summary><divclass="docblock"><p>Like <ahref="struct.OnceCell.html#method.set"title="method once_cell::sync::OnceCell::set"><code>set</code></a>, but also returns a reference to the final cell value.</p>
F: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/ops/function/trait.FnOnce.html"title="trait core::ops::function::FnOnce">FnOnce</a>() -> T,</div></h4></section></summary><divclass="docblock"><p>Gets the contents of the cell, initializing it with <code>f</code> if the cell
F: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/ops/function/trait.FnOnce.html"title="trait core::ops::function::FnOnce">FnOnce</a>() -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, E>,</div></h4></section></summary><divclass="docblock"><p>Gets the contents of the cell, initializing it with <code>f</code> if
</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.take"class="method"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#1197-1199">source</a><h4class="code-header">pub fn <ahref="#method.take"class="fn">take</a>(&mut self) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/option/enum.Option.html"title="enum core::option::Option">Option</a><T></h4></section></summary><divclass="docblock"><p>Takes the value out of this <code>OnceCell</code>, moving it back to an uninitialized state.</p>
</div></details></div></details></div><h2id="trait-implementations"class="section-header">Trait Implementations<ahref="#trait-implementations"class="anchor">§</a></h2><divid="trait-implementations-list"><detailsclass="toggle implementors-toggle"open><summary><sectionid="impl-Clone-for-OnceCell%3CT%3E"class="impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#918-932">source</a><ahref="#impl-Clone-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.clone"class="method trait-impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#919-924">source</a><ahref="#method.clone"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html#tymethod.clone"class="fn">clone</a>(&self) -><aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T></h4></section></summary><divclass='docblock'>Returns a copy of the value. <ahref="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html#tymethod.clone">Read more</a></div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.clone_from"class="method trait-impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#926-931">source</a><ahref="#method.clone_from"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html#method.clone_from"class="fn">clone_from</a>(&mut self, source: <aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&Self</a>)</h4></section></summary><divclass='docblock'>Performs copy-assignment from <code>source</code>. <ahref="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html#method.clone_from">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"open><summary><sectionid="impl-Debug-for-OnceCell%3CT%3E"class="impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#909-916">source</a><ahref="#impl-Debug-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html"title="trait core::fmt::Debug">Debug</a>><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html"title="trait core::fmt::Debug">Debug</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.fmt"class="method trait-impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#910-915">source</a><ahref="#method.fmt"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html#tymethod.fmt"class="fn">fmt</a>(&self, f: &mut <aclass="struct"href="https://doc.rust-lang.org/1.78.0/core/fmt/struct.Formatter.html"title="struct core::fmt::Formatter">Formatter</a><'_>) -><aclass="type"href="https://doc.rust-lang.org/1.78.0/core/fmt/type.Result.html"title="type core::fmt::Result">Result</a></h4></section></summary><divclass='docblock'>Formats the value using the given formatter. <ahref="https://doc.rust-lang.org/1.78.0/core/fmt/trait.Debug.html#tymethod.fmt">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"open><summary><sectionid="impl-Default-for-OnceCell%3CT%3E"class="impl"><aclass="src rightside"href="../../src
by <code>==</code>.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.ne"class="method trait-impl"><spanclass="rightside"><spanclass="since"title="Stable since Rust version 1.0.0">1.0.0</span> · <aclass="src"href="https://doc.rust-lang.org/1.78.0/src/core/cmp.rs.html#263">source</a></span><ahref="#method.ne"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/cmp/trait.PartialEq.html#method.ne"class="fn">ne</a>(&self, other: <aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&Rhs</a>) -><aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.bool.html">bool</a></h4></section></summary><divclass='docblock'>This method tests for <code>!=</code>. The default implementation is almost always
sufficient, and should not be overridden without very good reason.</div></details></div></details><sectionid="impl-Eq-for-OnceCell%3CT%3E"class="impl"><aclass="src rightside"href="../../src/once_cell/lib.rs.html#946">source</a><ahref="#impl-Eq-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/cmp/trait.Eq.html"title="trait core::cmp::Eq">Eq</a>><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/cmp/trait.Eq.html"title="trait core::cmp::Eq">Eq</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T></h3></section></div><h2id="synthetic-implementations"class="section-header">Auto Trait Implementations<ahref="#synthetic-implementations"class="anchor">§</a></h2><divid="synthetic-implementations-list"><sectionid="impl-Freeze-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-Freeze-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T> !<aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Freeze.html"title="trait core::marker::Freeze">Freeze</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T></h3></section><sectionid="impl-RefUnwindSafe-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-RefUnwindSafe-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.RefUnwindSafe.html"title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T><divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.UnwindSafe.html"title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> + <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.RefUnwindSafe.html"title="trait core::panic::unwind_safe::RefUnwindSafe">RefUnwindSafe</a>,</div></h3></section><sectionid="impl-Send-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-Send-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T><divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a>,</div></h3></section><sectionid="impl-Sync-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-Sync-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html"title="trait core::marker::Sync">Sync</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T><divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sync.html"title="trait core::marker::Sync">Sync</a> + <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Send.html"title="trait core::marker::Send">Send</a>,</div></h3></section><sectionid="impl-Unpin-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-Unpin-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Unpin.html"title="trait core::marker::Unpin">Unpin</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T><divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Unpin.html"title="trait core::marker::Unpin">Unpin</a>,</div></h3></section><sectionid="impl-UnwindSafe-for-OnceCell%3CT%3E"class="impl"><ahref="#impl-UnwindSafe-for-OnceCell%3CT%3E"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.UnwindSafe.html"title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a> for <aclass="struct"href="struct.OnceCell.html"title="struct once_cell::sync::OnceCell">OnceCell</a><T><divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/panic/unwind_safe/trait.UnwindSafe.html"title="trait core::panic::unwind_safe::UnwindSafe">UnwindSafe</a>,</div></h3></section></div><h2id="blanket-implementations"class="section-header">Blanket Implementations<ahref="#blanket-implementations"class="anchor">§</a></h2><divid="blanket-implementations-list"><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-Any-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/any.rs.html#140">source</a><ahref="#impl-Any-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html"title="trait core::any::Any">Any</a> for T<divclass="where">where
T: 'static + ?<aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.type_id"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/any.rs.html#141">source</a><ahref="#method.type_id"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html#tymethod.type_id"class="fn">type_id</a>(&self) -><aclass="struct"href="https://doc.rust-lang.org/1.78.0/core/any/struct.TypeId.html"title="struct core::any::TypeId">TypeId</a></h4></section></summary><divclass='docblock'>Gets the <code>TypeId</code> of <code>self</code>. <ahref="https://doc.rust-lang.org/1.78.0/core/any/trait.Any.html#tymethod.type_id">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-Borrow%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#208">source</a><ahref="#impl-Borrow%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html"title="trait core::borrow::Borrow">Borrow</a><T> for T<divclass="where">where
T: ?<aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.borrow"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#210">source</a><ahref="#method.borrow"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html#tymethod.borrow"class="fn">borrow</a>(&self) -><aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&T</a></h4></section></summary><divclass='docblock'>Immutably borrows from an owned value. <ahref="https://doc.rust-lang.org/1.78.0/core/borrow/trait.Borrow.html#tymethod.borrow">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-BorrowMut%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#216">source</a><ahref="#impl-BorrowMut%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html"title="trait core::borrow::BorrowMut">BorrowMut</a><T> for T<divclass="where">where
T: ?<aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html"title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.borrow_mut"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/borrow.rs.html#217">source</a><ahref="#method.borrow_mut"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut"class="fn">borrow_mut</a>(&mut self) -><aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&mut T</a></h4></section></summary><divclass='docblock'>Mutably borrows from an owned value. <ahref="https://doc.rust-lang.org/1.78.0/core/borrow/trait.BorrowMut.html#tymethod.borrow_mut">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-From%3C!%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#782">source</a><ahref="#impl-From%3C!%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html"title="trait core::convert::From">From</a><<aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.never.html">!</a>> for T</h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.from-2"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#783">source</a><ahref="#method.from-2"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from"class="fn">from</a>(t: <aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.never.html">!</a>) -> T</h4></section></summary><divclass='docblock'>Converts to this type from the input type.</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-From%3CT%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#765">source</a><ahref="#impl-From%3CT%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html"title="trait core::convert::From">From</a><T> for T</h3></section></summary><divclass="impl-items"><detailsclass="toggle method-toggle"open><summary><sectionid="method.from-1"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#768">source</a><ahref="#method.from-1"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html#tymethod.from"class="fn">from</a>(t: T) -> T</h4></section></summary><divclass="docblock"><p>Returns the argument unchanged.</p>
</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-Into%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#748-750">source</a><ahref="#impl-Into%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><U> for T<divclass="where">where
<code><ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.From.html"title="trait core::convert::From">From</a><T> for U</code> chooses to do.</p>
</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-ToOwned-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/alloc/borrow.rs.html#83-85">source</a><ahref="#impl-ToOwned-for-T"class="anchor">§</a><h3class="code-header">impl<T><aclass="trait"href="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html"title="trait alloc::borrow::ToOwned">ToOwned</a> for T<divclass="where">where
T: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Owned"class="associatedtype trait-impl"><ahref="#associatedtype.Owned"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html#associatedtype.Owned"class="associatedtype">Owned</a> = T</h4></section></summary><divclass='docblock'>The resulting type after obtaining ownership.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.to_owned"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/alloc/borrow.rs.html#88">source</a><ahref="#method.to_owned"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned"class="fn">to_owned</a>(&self) -> T</h4></section></summary><divclass='docblock'>Creates owned data from borrowed data, usually by cloning. <ahref="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html#tymethod.to_owned">Read more</a></div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.clone_into"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/alloc/borrow.rs.html#92">source</a><ahref="#method.clone_into"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html#method.clone_into"class="fn">clone_into</a>(&self, target: <aclass="primitive"href="https://doc.rust-lang.org/1.78.0/std/primitive.reference.html">&mut T</a>)</h4></section></summary><divclass='docblock'>Uses borrowed data to replace owned data, usually by cloning. <ahref="https://doc.rust-lang.org/1.78.0/alloc/borrow/trait.ToOwned.html#method.clone_into">Read more</a></div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryFrom%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#805-807">source</a><ahref="#impl-TryFrom%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U> for T<divclass="where">where
U: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.Into.html"title="trait core::convert::Into">Into</a><T>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error-1"class="associatedtype trait-impl"><ahref="#associatedtype.Error-1"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error"class="associatedtype">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></h4></section></summary><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_from"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#812">source</a><ahref="#method.try_from"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#tymethod.try_from"class="fn">try_from</a>(value: U) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><T, <T as <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><U>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'>Performs the conversion.</div></details></div></details><detailsclass="toggle implementors-toggle"><summary><sectionid="impl-TryInto%3CU%3E-for-T"class="impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#790-792">source</a><ahref="#impl-TryInto%3CU%3E-for-T"class="anchor">§</a><h3class="code-header">impl<T, U><aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html"title="trait core::convert::TryInto">TryInto</a><U> for T<divclass="where">where
U: <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>,</div></h3></section></summary><divclass="impl-items"><detailsclass="toggle"open><summary><sectionid="associatedtype.Error"class="associatedtype trait-impl"><ahref="#associatedtype.Error"class="anchor">§</a><h4class="code-header">type <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html#associatedtype.Error"class="associatedtype">Error</a> = <U as <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></h4></section></summary><divclass='docblock'>The type returned in the event of a conversion error.</div></details><detailsclass="toggle method-toggle"open><summary><sectionid="method.try_into"class="method trait-impl"><aclass="src rightside"href="https://doc.rust-lang.org/1.78.0/src/core/convert/mod.rs.html#797">source</a><ahref="#method.try_into"class="anchor">§</a><h4class="code-header">fn <ahref="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryInto.html#tymethod.try_into"class="fn">try_into</a>(self) -><aclass="enum"href="https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html"title="enum core::result::Result">Result</a><U, <U as <aclass="trait"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html"title="trait core::convert::TryFrom">TryFrom</a><T>>::<aclass="associatedtype"href="https://doc.rust-lang.org/1.78.0/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></h4></section></summary><divclass='docblock'>Performs the conversion.</div></details></div></details></div></section></div></main></body></html>
