<linkrel="alternate icon"type="image/png"href="../favicon-32x32.png"><styletype="text/css">#crate-search{background-image:url("../down-arrow.svg");}</style></head><bodyclass="rustdoc struct"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="sidebar"><divclass="sidebar-menu">☰</div><ahref='../widgetry/index.html'><divclass='logo-container rust-logo'><imgsrc='../rust-logo.png'alt='logo'></div></a><pclass="location">Struct Cached</p><divclass="sidebar-elems"><divclass="block items"><aclass="sidebar-title"href="#fields">Fields</a><divclass="sidebar-links"><ahref="#structfield.contents">contents</a></div><aclass="sidebar-title"href="#implementations">Methods</a><divclass="sidebar-links"><ahref="#method.clear">clear</a><ahref="#method.key">key</a><ahref="#method.new">new</a><ahref="#method.update">update</a><ahref="#method.value">value</a></div><aclass="sidebar-title"href="#synthetic-implementations">Auto Trait Implementations</a><divclass="sidebar-links"><ahref="#impl-RefUnwindSafe">RefUnwindSafe</a><ahref="#impl-Send">Send</a><ahref="#impl-Sync">Sync</a><ahref="#impl-Unpin">Unpin</a><ahref="#impl-UnwindSafe">UnwindSafe</a></div><aclass="sidebar-title"href="#blanket-implementations">Blanket Implementations</a><divclass="sidebar-links"><ahref="#impl-Any">Any</a><ahref="#impl-Borrow%3CT%3E">Borrow<T></a><ahref="#impl-BorrowMut%3CT%3E">BorrowMut<T></a><ahref="#impl-Downcast">Downcast</a><ahref="#impl-DowncastSync">DowncastSync</a><ahref="#impl-From%3CT%3E">From<T></a><ahref="#impl-Into%3CU%3E">Into<U></a><ahref="#impl-Same%3CT%3E">Same<T></a><ahref="#impl-TryFrom%3CU%3E">TryFrom<U></a><ahref="#impl-TryInto%3CU%3E">TryInto<U></a></div></div><pclass="location"><ahref="index.html">widgetry</a></p><script>window.sidebarCurrent={name:"Cached",ty:"struct",relpath:""};</script><scriptdefersrc="sidebar-items.js"></script></div></nav><divclass="theme-picker"><buttonid="theme-picker"aria-label="Pick another theme!"aria-haspopup="menu"><imgsrc="../brush.svg"width="18"alt="Pick another theme!"></button><divid="theme-choices"role="menu"></div></div><scriptsrc="../theme.js"></script><navclass="sub"><formclass="search-form"><divclass="search-container"><div><selectid="crate-search"><optionvalue="All crates">All crates</option></select><inputclass="search-input"name="search"disabledautocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"></div><buttontype="button"class="help-button">?</button>
</div><h4id="method.value"class="method"><code>pub fn <ahref="#method.value"class="fnname">value</a>(&self) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html"title="enum core::option::Option">Option</a><<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&</a>V></code><aclass="srclink"href="../src/widgetry/tools/mod.rs.html#20-22"title="goto source code">[src]</a></h4><divclass="docblock"><p>Get the current value.</p>
</div><h4id="method.update"class="method"><code>pub fn <ahref="#method.update"class="fnname">update</a><F: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/ops/function/trait.FnMut.html"title="trait core::ops::function::FnMut">FnMut</a>(K) -> V>(&mut self, key: <aclass="enum"href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html"title="enum core::option::Option">Option</a><K>, produce_value: F)</code><aclass="srclink"href="../src/widgetry/tools/mod.rs.html#25-33"title="goto source code">[src]</a></h4><divclass="docblock"><p>Update the value if the key has changed.</p>
then be further <code>downcast</code> into <code>Box<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any">Read more</a></p>
further <code>downcast</code> into <code>Rc<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any_rc">Read more</a></p>
further <code>downcast</code> into <code>Arc<ConcreteType></code> where <code>ConcreteType</code> implements <code>Trait</code>. <ahref="#tymethod.into_any_arc">Read more</a></p>
</div></div><h3id="impl-From%3CT%3E"class="impl"><codeclass="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</code><ahref="#impl-From%3CT%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#552-556"title="goto source code">[src]</a></h3><divclass="impl-items"><h4id="method.from"class="method hidden"><code>pub fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.From.html#tymethod.from"class="fnname">from</a>(t: T) -> T</code><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#553-555"title="goto source code">[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3id="impl-Into%3CU%3E"class="impl"><codeclass="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></code><ahref="#impl-Into%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#541-548"title="goto source code">[src]</a></h3><divclass="impl-items"><h4id="method.into"class="method hidden"><code>pub fn <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.Into.html#tymethod.into"class="fnname">into</a>(self) -> U</code><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#545-547"title="goto source code">[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3id="impl-Same%3CT%3E"class="impl"><codeclass="in-band">impl<T> Same<T> for T</code><ahref="#impl-Same%3CT%3E"class="anchor"></a></h3><divclass="impl-items"><h4id="associatedtype.Output"class="type"><code>type <ahref="#associatedtype.Output"class="type">Output</a> = T</code></h4><divclass='docblock'><p>Should always be <code>Self</code></p>
</div></div><h3id="impl-TryFrom%3CU%3E"class="impl"><codeclass="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></code><ahref="#impl-TryFrom%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#589-598"title="goto source code">[src]</a></h3><divclass="impl-items"><h4id="associatedtype.Error"class="type"><code>type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"class="type">Error</a> = <aclass="enum"href="https://doc.rust-lang.org/nightly/core/convert/enum.Infallible.html"title="enum core::convert::Infallible">Infallible</a></code></h4><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4id="method.try_from"class="method hidden"><code>pub 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="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></code><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#595-597"title="goto source code">[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
</div></div><h3id="impl-TryInto%3CU%3E"class="impl"><codeclass="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></code><ahref="#impl-TryInto%3CU%3E"class="anchor"></a><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#575-584"title="goto source code">[src]</a></h3><divclass="impl-items"><h4id="associatedtype.Error-1"class="type"><code>type <ahref="https://doc.rust-lang.org/nightly/core/convert/trait.TryInto.html#associatedtype.Error"class="type">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="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a></code></h4><divclass='docblock'><p>The type returned in the event of a conversion error.</p>
</div><h4id="method.try_into"class="method hidden"><code>pub 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="type"href="https://doc.rust-lang.org/nightly/core/convert/trait.TryFrom.html#associatedtype.Error"title="type core::convert::TryFrom::Error">Error</a>></code><aclass="srclink"href="https://doc.rust-lang.org/nightly/src/core/convert/mod.rs.html#581-583"title="goto source code">[src]</a></h4><divclass='docblock hidden'><p>Performs the conversion.</p>
