title: Get certain item from each Tuple from List
body: <p>What is the correct way to go about creating a list of, say, the first item of each <code>Tuple</code> in a <code>List</code> of <code>Tuples</code>?</p>
  
  <p>If I have a <code>List&lt;Tuple&lt;string,string&gt;&gt;</code>, how would I get a <code>List&lt;string&gt;</code> of the first string in each <code>Tuple</code>?</p>