F# String to int conversion : <p>How do i convert from string to int in F#?</p>

<p>As an example i'd like to pass 
<code>let someString = "123</code> to <code>let someInt = 123</code>
I cant really find any parse methods that work for me..
This question is not about parsing from int to String, but string to int. Not duplicate of a related question.
Any ideas?</p>

<p>Thanks in advance</p>
