Convert a list of characters (or array) to a string

Question

how does one convert from a list of characters to a string?

To put it another way, how do I reverse List.ofSeq \"abcd\"?

UPDATE: new System.St

Answer 1

Just faced similar problem, and came up with this solutions:

List.fold (fun str x -> str + x.ToString()) "" (List.ofSeq "abcd")