package preface

  1. Overview
  2. Docs
package preface
Legend:
Library
Module
Module type
Parameter
Class
Class type

Implementation for Predicate.t.

A Predicate is just a function from 'a to bool.

Type

type 'a t = 'a -> bool

Implementation

Contravariant

module Contravariant : Preface_specs.CONTRAVARIANT with type 'a t = 'a t

Divisible

module Divisible : Preface_specs.DIVISIBLE with type 'a t = 'a t

Decidable

module Decidable : Preface_specs.DECIDABLE with type 'a t = 'a t

Invariant Functor

module Invariant : Preface_specs.INVARIANT with type 'a t = 'a t

Additional functions

Additional functions to facilitate practical work with Predicate.t.

val negate : 'a t -> 'a t

negate the predicate.

val tautology : 'a t

A predicate always true.

val contradiction : 'a t

A predicate always false.

val and_ : 'a t -> 'a t -> 'a t

Compose two predicates (using and).

val or_ : 'a t -> 'a t -> 'a t

Compose two predicates (using or).

infix operators

module Infix : sig ... end
val (&&) : 'a t -> 'a t -> 'a t

Compose two predicates (using and).

val (||) : 'a t -> 'a t -> 'a t

Compose two predicates (using or).

val (!) : 'a t -> 'a t

negate the predicate.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct