map in rustdoc - Rust (original) (raw)
Macro map
macro_rules! map {
($( <span class="katex"><span class="katex-mathml"><math xmlns="http://www.w3.org/1998/Math/MathML"><semantics><mrow><mi>k</mi><mi>e</mi><mi>y</mi><mo>:</mo><mi>e</mi><mi>x</mi><mi>p</mi><mi>r</mi><mo>=</mo><mo>></mo></mrow><annotation encoding="application/x-tex">key: expr => </annotation></semantics></math></span><span class="katex-html" aria-hidden="true"><span class="base"><span class="strut" style="height:0.8889em;vertical-align:-0.1944em;"></span><span class="mord mathnormal" style="margin-right:0.03148em;">k</span><span class="mord mathnormal" style="margin-right:0.03588em;">ey</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">:</span><span class="mspace" style="margin-right:0.2778em;"></span></span><span class="base"><span class="strut" style="height:0.7335em;vertical-align:-0.1944em;"></span><span class="mord mathnormal">e</span><span class="mord mathnormal">x</span><span class="mord mathnormal">p</span><span class="mord mathnormal" style="margin-right:0.02778em;">r</span><span class="mspace" style="margin-right:0.2778em;"></span><span class="mrel">=></span></span></span></span>val: expr ),* $(,)*) => { ... };
}Expand description
A macro to create a FxHashMap.
Example:
let letters = map!{"a" => "b", "c" => "d"};Trailing commas are allowed. Commas between elements are required (even if the expression is a block).