27 lines
679 B
OCaml
27 lines
679 B
OCaml
let read_file name =
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let ic = open_in name in
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let try_read () =
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try Some (input_line ic)
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with End_of_file -> None in
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let rec aux acc =
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match try_read () with
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| Some s -> aux (s::acc)
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| None -> close_in ic; acc in
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aux []
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module CS = Set.Make(Char);;
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let set_of_string str =
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let rec aux s i st =
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if i < 0 then st
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else aux s (i - 1) (CS.add s.[i] st) in
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aux str ((String.length str) - 1) CS.empty
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let map_pair f (a, b) = (f a, f b)
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let curry f x y = f (x, y)
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let uncurry f (x, y) = f x y
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let uncurry3 f (x, y, z) = f x y z
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let swap x y = y x
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let pair_of_list l = (List.hd l, List.tl l |> List.hd)
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