Hi Jeff,
The Seq module can now be used on the F# list type since F#'s lists now implment the IEnumerable interface. This provides some library functions that allow you to do want you want more concisely and efficiently. How about this:
1 2 3 4
#light let myList = [1 .. 4] let l = Seq.take (myList.Length - 1) myList printfn "%A" l
Note that Seq also has a truncate function that returns a seq instead of a list. Alteratively you could use a ResizeArray, the F# name for System.Collections.Generic.List. This would be slightly less eligant and less in the functional style, but I think slightly more efficient.
1 2 3 4
#light let myList = new ResizeArray<int>([1 .. 4]) myList.RemoveAt(myList.Count - 1) printfn "%A" myList
Cheers,
Rob
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I want to retreive all but the last element of a list. The best way I can figure is,
There's got to be a more concise way. :) (And isn't this approach really expensive?)
--
Jeff S.