focal (3) Set.3o.gz

NAME

       Set - Sets over ordered types.

Module

       Module   Set

Documentation

       Module Set
        : sig end

       Sets over ordered types.

       This module implements the set data structure, given a total ordering function over the set elements. All
       operations over sets are purely applicative (no side-effects).  The implementation uses  balanced  binary
       trees,  and is therefore reasonably efficient: insertion and membership take time logarithmic in the size
       of the set, for instance.

       The Set.Make functor constructs implementations for any type, given a compare  function.   For  instance:
       module IntPairs = struct type t = int * int let compare (x0,y0) (x1,y1) = match Stdlib.compare x0 x1 with
       0 -> Stdlib.compare y0 y1 | c -> c end module PairsSet = Set.Make(IntPairs) let m  =  PairsSet.(empty  |>
       add (2,3) |> add (5,7) |> add (11,13))

       This creates a new module PairsSet , with a new type PairsSet.t of sets of int * int .

       module type OrderedType = sig end

       Input signature of the functor Set.Make .

       module type S = sig end

       Output signature of the functor Set.Make .

       module Make : functor (Ord : OrderedType) -> sig end

       Functor building an implementation of the set structure given a totally ordered type.