title: How to convert a list of tuples into a regular list in haskell?
body: <p>I'd like to convert a list of tuples <code>(a,a)</code> into just a list of <code>a</code>s. This is what i have so far</p>
  
  <pre><code>map (\(x,y) -&gt; [x,y]) [(1,4),(2,5)] 
  &gt; [[1,4],[2,5]]
  </code></pre>
  
  <p>but what i want is</p>
  
  <pre><code>&gt; [1,4,2,5]
  </code></pre>