Module Cf_relations

Utility relations.

Overview

This module defines convenient signatures for the useful equality and total ordering relations on a monomorphic type.

module type Order = sig ... end

Module type defining a type t and a corresponding total ordering function, of the sort generated by Ppx_deriving, which returns the same value as the standard Pervasives.compare function.

val min : (module Order with type t = 't) -> 't -> 't -> 't

Use min (module M: Order) a b to select the minimum of a and b according to the total order M.

val max : (module Order with type t = 't) -> 't -> 't -> 't

Use max (module M: Order) a b to select the maximum of a and b according to the total order M.

module type Equal = sig ... end

Module type defining a type t and a corresponding equality relation function, of the sort generated by Ppx_deriving, which returns the same value as the standard Pervasives.(=) operator.

module type Std = sig ... end

Module type definining a type t and the corresponding equality and total ordering relation functions, of the sort generated by Ppx_deriving, which return the same value as the standard Pervasives.(=) and Pervasives.compare functions

module Int : Std with type t = int

The equality and total ordering relation for standard integers.