Module CCOrd

Comparisons

type 'a t = 'a ‑> 'a ‑> int

Comparison (total ordering) between two elements, that returns an int.

val compare : 'a t

Polymorphic "magic" comparison.

val opp : 'a t ‑> 'a t

Opposite order.

val equiv : int ‑> int ‑> bool

Returns true iff the two comparison results are the same.

val int : int t
val string : string t
val bool : bool t
val float : float t

Lexicographic Combination

val (<?>) : int ‑> ('a t * 'a * 'a) ‑> int

c1 <?> (ord, x, y) returns the same as c1 if c1 is not 0; otherwise it uses ord to compare the two values x and y, of type 'a.

Example: 

CCInt.compare 1 3
      <?> (String.compare, "a", "b")
      <?> (CCBool.compare, true, false)

Same example, using only CCOrd:: 

CCOrd.(int 1 3
        <?> (string, "a", "b")
        <?> (bool, true, false))
val option : 'a t ‑> 'a option t

Comparison of optional values. None is smaller than any Some _.

val pair : 'a t ‑> 'b t ‑> ('a * 'b) t
val triple : 'a t ‑> 'b t ‑> 'c t ‑> ('a * 'b * 'c) t
val list : 'a t ‑> 'a list t

Lexicographic combination on lists.

val array : 'a t ‑> 'a array t
val map : ('a ‑> 'b) ‑> 'b t ‑> 'a t

map f ord is the comparison function that, given objects x and y, projects x and y using f (e.g. using a record field) and then compares those projections with ord. Example: map fst CCInt.compare compares values of type (int * 'a) by their first component.

val (>|=) : 'b t ‑> ('a ‑> 'b) ‑> 'a t

Infix equivalent of map.

module Infix : sig ... end