Pastable version of Array#split_with(something)

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            <pre class="sunburst"><span style="color:#E28964;">require</span> <span style="color:#65B042;"><span style="color:#65B042;">'</span>rubygems<span style="color:#65B042;">'</span></span>
<span style="color:#E28964;">require</span> <span style="color:#65B042;"><span style="color:#65B042;">'</span>functor<span style="color:#65B042;">'</span></span>

<span style="color:#E28964;">class</span> <span style="text-decoration:underline;">Array</span>

<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">=begin</span></span>
<span style="color:#AEAEAE;font-style:italic;">usage:</span>
<span style="color:#AEAEAE;font-style:italic;">  matches, non-matches = arr.split_with exp # where [Regexp, Proc, Array, Integer].include? exp  </span>
<span style="color:#AEAEAE;font-style:italic;"><span style="color:#AEAEAE;font-style:italic;">=end</span></span>
  <span style="color:#E28964;">def</span> <span style="color:#89BDFF;">split_with</span>(<span style="color:#3E87E3;">exp <span style="color:#E28964;">=</span> <span style="color:#3387CC;">nil</span><span style="color:#3E87E3;">,</span> <span style="color:#E28964;">&amp;</span>block</span>)
    <span style="color:#3E87E3;"><span style="color:#3E87E3;">@</span>_split_with_functor</span> <span style="color:#E28964;">||=</span> <span style="color:#9B859D;">Functor</span>.<span style="color:#89BDFF;">new</span> <span style="color:#E28964;">do</span>
      <span style="color:#89BDFF;">given</span>(<span style="color:#3E87E3;">Regexp</span>, <span style="color:#3E87E3;">Array</span>) {|<span style="color:#3E87E3;">exp</span>, <span style="color:#3E87E3;">arr</span>| arr.<span style="color:#89BDFF;">select</span> {|<span style="color:#3E87E3;">x</span>| x <span style="color:#E28964;">=~</span> exp}}
      <span style="color:#89BDFF;">given</span>(<span style="color:#3E87E3;">Proc</span>, <span style="color:#3E87E3;">Array</span>) {|<span style="color:#3E87E3;">exp</span>, <span style="color:#3E87E3;">arr</span>| arr.<span style="color:#89BDFF;">select</span> {|<span style="color:#3E87E3;">x</span>| exp.<span style="color:#89BDFF;">call</span>(x)}}
      <span style="color:#89BDFF;">given</span>(<span style="color:#3E87E3;">Array</span>, <span style="color:#3E87E3;">Array</span>) {|<span style="color:#3E87E3;">exp</span>, <span style="color:#3E87E3;">arr</span>| arr.<span style="color:#89BDFF;">select</span> {|<span style="color:#3E87E3;">x</span>| exp.<span style="color:#89BDFF;">include?</span>(x)}}
      <span style="color:#89BDFF;">given</span>(<span style="color:#3E87E3;">Integer</span>, <span style="color:#3E87E3;">Array</span>) {|<span style="color:#3E87E3;">exp</span>, <span style="color:#3E87E3;">arr</span>| arr.<span style="color:#89BDFF;">select</span> {|<span style="color:#3E87E3;">x</span>| x.<span style="color:#89BDFF;">to_i</span> <span style="color:#E28964;">&lt;</span> exp}}
    <span style="color:#E28964;">end</span>
    matches <span style="color:#E28964;">=</span> <span style="color:#3E87E3;"><span style="color:#3E87E3;">@</span>_split_with_functor</span>.<span style="color:#89BDFF;">call</span>(exp <span style="color:#E28964;">||</span> block,<span style="color:#3E87E3;">self</span>)
    [matches, <span style="color:#3E87E3;">self</span> <span style="color:#E28964;">-</span> matches]
  <span style="color:#E28964;">end</span>

<span style="color:#E28964;">end</span>
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