CCOrd
val poly : 'a t
Polymorphic "magic" comparison. Use with care, as it will fail on some types.
val compare : 'a t
Polymorphic "magic" comparison.
Opposite order. For example, opp cmp a b < 0
iff cmp b a > 0
. This can be used to sort values in the opposite order, among other things.
val int : int t
val string : string t
val bool : bool t
val float : float t
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))
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.
module Infix : sig ... end