">Typeable <a href="Network-Mom-Stompl-Patterns-Basic.html#t:PatternsException">PatternsException</a></td><td class="doc empty">&nbsp;</td></tr><tr><td class="src">Exception <a href="Network-Mom-Stompl-Patterns-Basic.html#t:PatternsException">PatternsException</a></td><td class="doc empty">&nbsp;</td></tr></table></div></div></div><div class="top"><p class="src"><span class="keyword">type</span> <a name="t:OnError" class="def">OnError</a> = SomeException -&gt; String -&gt; IO ()</p><div class="doc"><p>Error