FirstOrDefault In F#

Question

How to write FirstOrDefault Linq Query in F#? Can I use linq to sql in F# in totally?

Answer 1

Regarding LINQ-to-SQL, see

http://blogs.msdn.com/dsyme/archive/2009/10/23/a-quick-refresh-on-query-support-in-the-f-power-pack.aspx

Regarding FirstOrDefault, it's just an extension method in the System.Linq namespace:

let l = [1;2;3]
open System.Linq 
let r = l.FirstOrDefault()