1<div class='api-docs-breadcrumbs'><a href="index.html">test</a> / <a href="./foo.html">foo</a></div> 2<h1>foo</h1> 3<div class="overload-group"><a name="$foo()"></a> 4<div class="signature"><code><span class="keyword">fun </span><span class="identifier">foo</span><span class="symbol">(</span><span class="symbol">)</span><span class="symbol">: </span><span class="identifier">Int</span></code></div> 5<p>Groups elements of the original sequence by the key returned by the given <a href="#">keySelector</a> function 6applied to each element and returns a map where each group key is associated with a list of corresponding elements.</p> 7<div class="sample"><pre><code class="lang-kotlin"> 8 9fun main(args: Array<String>) { 10//sampleStart 11if (true) { 12 println(property) 13} 14//sampleEnd 15}</code></pre></div> 16</div> 17<div class="overload-group"><a name="$foo(kotlin.Int)"></a> 18<div class="signature"><code><span class="keyword">fun </span><span class="identifier">foo</span><span class="symbol">(</span><span class="parameterName" id="$foo(kotlin.Int)/i">i</span><span class="symbol">:</span> <span class="identifier">Int</span><span class="symbol">)</span><span class="symbol">: </span><span class="identifier">Int</span></code></div> 19</div> 20