let f x:IEnumerable<'a>->string = string.Join (" ", x) printfn "%A" (f [3; 4; 8])
Standard input is empty
/home/UNyjtN/prog.fs(1,9): error FS0039: The type 'IEnumerable' is not defined /home/UNyjtN/prog.fs(1,42): error FS0039: The field, constructor or member 'Join' is not defined
Standard output is empty