Question

How to double each element in a list with F#

Answer 1

let lst1 = [4; 1; 6; 9; 10; 8]

printfn "%A" lst1

let lst2 = List.map (fun n -> n * 2) lst1

printfn "%A" lst2



     
(* 
run:
     
[4; 1; 6; 9; 10; 8]
[8; 2; 12; 18; 20; 16]
     
*)

 

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