n</a></span><span class="signature">(<wbr><span class="parameter" id="splitMapJoin-param-pattern"><span class="type-annotation"><a href="dart-core/Pattern-class.html">Pattern</a></span> <span class="parameter-name">pattern</span>, {</span> <span class="parameter" id="splitMapJoin-param-onMatch"><span class="type-annotation"><a href="dart-core/String-class.html">String</a></span> <span class="parameter-name">onMatch</span>(<span class="parameter" id="param-match"><span class="type-annotation"><a href="dart-c