ind">def</span></span> <span class="symbol"><span class="implicit deprecated" title="gt4s: $u2192. Deprecated: (Since version 2.13.0) Use -&gt; instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.">→</span><span class="tparams">[<span name="B">B</span>]</span><span class="params">(<span name="y">y: <span name="scala.Predef.ArrowAssoc.→.B" class="extype">B</span></span>)</span><span class="result">: (<a href="" name="provingground.