title: Appending a prefix when using join in Perl
body: <p>I have an array of strings that I would like to use the join function on. However, I would like to prefix each string with the same string. Can I do this in one line as opposed to iterating through the array first and changing each value before using join?</p>
  
  <p>Actually it's a lil bit trickier. The prefix is not part of the join separator. Meaning if you used a prefix like "num-" on an array of (1,2,3,4,5), you will want to get this result: num-1,num-2,num-3,num-4,num-5</p>