module OP:sig
..end
val (|>) : 'a -> ('a -> 'b) -> 'b
val (++) : ('a -> 'b) -> ('b -> 'c) -> 'a -> 'c
val finally : (unit -> 'a) -> (unit -> unit) -> 'a
finally f cleaner
call the cleaner
function when f
is
complete even in the presence of exceptions.