Why not. If the lists are very long and they have large overlaps it may not be very efficient though.
You can also use set union:
1 2 3 4 5 6
let l1 = [1;2;3] let l2 = [2;3;4] let l3 = List.concat [l1; l2] |> Seq.distinct let l3 = Set.ofList l1 |> Set.union (Set.ofList l2)
Hi,
some quick thoughts on this:
Don't use Set for this but System.Collections.Generic.Hashset for two simple reasons - first Hashset works with any datatype (supporting some meaningful Compare/GetHashValue) and second for HashSet.SetUnion there is a overload that takes a IEnumerable (a.k.a. Seq) as input - so you don't have to first create a Set out of your second List.
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lets say I have a list
david,charlie,carol
john,carol,chris
I want to merge them and have distinct items.
should I concat and use Distinct?