---
layout: posts
title: Api - ICollectionKeyComparer Interface
---
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<section class="tsd-panel tsd-comment">
	<div class="tsd-comment tsd-typography">
		<div class="lead">
			<p>Compare keys to see if they are equal.</p>
		</div>
	</div>
</section>
<section class="tsd-panel tsd-type-parameters">
	<h3>Type parameters</h3>
	<ul class="tsd-type-parameters">
		<li>
			<h4>K</h4>
		</li>
	</ul>
</section>
<section class="tsd-panel tsd-hierarchy">
	<h3>Hierarchy</h3>
	<ul class="tsd-hierarchy">
		<li>
			<span class="target">ICollectionKeyComparer</span>
		</li>
	</ul>
</section>
<section class="tsd-panel">
	<h3 class="tsd-before-signature">Callable</h3>
	<ul class="tsd-signatures tsd-kind-interface tsd-parent-kind-namespace tsd-has-type-parameter">
		<li class="tsd-signature tsd-kind-icon">__call<span class="tsd-signature-symbol">(</span>a<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">K</span>, b<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">K</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
	</ul>
	<ul class="tsd-descriptions">
		<li class="tsd-description">
			<aside class="tsd-sources">
				<ul>
					<li>Defined in <a href="https://github.com/microsoft/maker.js/blob/master/packages/maker.js/src/core/collect.ts#L6">src/maker.js/packages/maker.js/src/core/collect.ts:6</a></li>
				</ul>
			</aside>
			<div class="tsd-comment tsd-typography">
				<div class="lead">
					<p>Compare keys to see if they are equal.</p>
				</div>
			</div>
			<h4 class="tsd-parameters-title">Parameters</h4>
			<ul class="tsd-parameters">
				<li>
					<h5>a: <span class="tsd-signature-type">K</span></h5>
				</li>
				<li>
					<h5>b: <span class="tsd-signature-type">K</span></h5>
				</li>
			</ul>
			<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
		</li>
	</ul>
</section>
</div>
<footer class="tsd-panel with-border-bottom">
<div class="container">
	<h2>Legend</h2>
	<div class="tsd-legend-group">
		<ul class="tsd-legend">
			<li class="tsd-kind-module"><span class="tsd-kind-icon">Module</span></li>
			<li class="tsd-kind-object-literal"><span class="tsd-kind-icon">Object literal</span></li>
			<li class="tsd-kind-variable"><span class="tsd-kind-icon">Variable</span></li>
			<li class="tsd-kind-function"><span class="tsd-kind-icon">Function</span></li>
			<li class="tsd-kind-function tsd-has-type-parameter"><span class="tsd-kind-icon">Function with type parameter</span></li>
			<li class="tsd-kind-index-signature"><span class="tsd-kind-icon">Index signature</span></li>
			<li class="tsd-kind-type-alias"><span class="tsd-kind-icon">Type alias</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-enum"><span class="tsd-kind-icon">Enumeration</span></li>
			<li class="tsd-kind-enum-member"><span class="tsd-kind-icon">Enumeration member</span></li>
			<li class="tsd-kind-property tsd-parent-kind-enum"><span class="tsd-kind-icon">Property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-enum"><span class="tsd-kind-icon">Method</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-interface"><span class="tsd-kind-icon">Interface</span></li>
			<li class="tsd-kind-interface tsd-has-type-parameter"><span class="tsd-kind-icon">Interface with type parameter</span></li>
			<li class="tsd-kind-constructor tsd-parent-kind-interface"><span class="tsd-kind-icon">Constructor</span></li>
			<li class="tsd-kind-property tsd-parent-kind-interface"><span class="tsd-kind-icon">Property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-interface"><span class="tsd-kind-icon">Method</span></li>
			<li class="tsd-kind-index-signature tsd-parent-kind-interface"><span class="tsd-kind-icon">Index signature</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-class"><span class="tsd-kind-icon">Class</span></li>
			<li class="tsd-kind-class tsd-has-type-parameter"><span class="tsd-kind-icon">Class with type parameter</span></li>
			<li class="tsd-kind-constructor tsd-parent-kind-class"><span class="tsd-kind-icon">Constructor</span></li>
			<li class="tsd-kind-property tsd-parent-kind-class"><span class="tsd-kind-icon">Property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-class"><span class="tsd-kind-icon">Method</span></li>
			<li class="tsd-kind-accessor tsd-parent-kind-class"><span class="tsd-kind-icon">Accessor</span></li>
			<li class="tsd-kind-index-signature tsd-parent-kind-class"><span class="tsd-kind-icon">Index signature</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited constructor</span></li>
			<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited method</span></li>
			<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-inherited"><span class="tsd-kind-icon">Inherited accessor</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-property tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected method</span></li>
			<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-protected"><span class="tsd-kind-icon">Protected accessor</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-property tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private property</span></li>
			<li class="tsd-kind-method tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private method</span></li>
			<li class="tsd-kind-accessor tsd-parent-kind-class tsd-is-private"><span class="tsd-kind-icon">Private accessor</span></li>
		</ul>
		<ul class="tsd-legend">
			<li class="tsd-kind-property tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static property</span></li>
			<li class="tsd-kind-call-signature tsd-parent-kind-class tsd-is-static"><span class="tsd-kind-icon">Static method</span></li>
		</ul>
	</div>
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