title: Using System.String.Split from F#
body: <p>I would like to use the .NET CLR version of String.Split in F#. Specifically I would like to use this code:</p>
  
  <pre><code>let main argv = 
      let s = "Now is the time for FOO good men to come to the aide of their country"
      let sepAry = [|"FOO"; "BAR"|]
      let z1 = s.Split sepAry
      0 // return an integer exit code
  </code></pre>
  
  <p>This fails to compile however, due to the fact (I believe) that the version of Split in F# is implemented differently than the one in .Net 4.5.
  The version from .NET that I would like is:</p>
  
  <p>Split(String[], StringSplitOptions)     Returns a string array that contains the substrings in this string that are delimited by elements of a specified string array. A parameter specifies whether to return empty array elements.</p>
  
  <p>I understand that I am getting the F# version of Split, which formerly resided in the PowerPack and that is why the implementation differs from the CLR version.</p>
  
  <p>What is the best way to get what I want? Is it possible to override the F# version of Split and use the .Net version? Is it possible to extend the F# version and if so, how?</p>