package ocaml-compiler

  1. Overview
  2. Docs
Official release of OCaml 5.5.0

Install 

dune-project
 Dependency

ocaml.org Edit opam file Versions (17)

Authors

  1. Xavier Leroy
  2. Damien Doligez
  3. Alain Frisch
  4. Jacques Garrigue
  5. Didier Rémy
  6. K
    KC Sivaramakrishnan
  7. J
    Jérôme Vouillon

Maintainers

  1. David Allsopp
  2. F
    Florian Angeletti <florian.angeletti@inria.fr>

Sources

ocaml-5.5.0.tar.gz
sha256=c018052c8264a3791a8f54f84179e6bcc78ed82eb889bacc2773df445259aed3

doc/stdlib/Stdlib/Pair/index.html

Module Stdlib.PairSource

Operations on pairs.

  • since 5.4

Pairs

Sourcetype ('a, 'b) t = 'a * 'b

The type for pairs.

Sourceval make : 'a -> 'b -> 'a * 'b

make a b is the pair (a, b).

Sourceval fst : ('a * 'b) -> 'a

fst (a, b) is a.

Sourceval snd : ('a * 'b) -> 'b

snd (a, b) is b.

Sourceval swap : ('a * 'b) -> 'b * 'a

swap (a, b) is (b, a).

Iterators

Sourceval fold : ('a -> 'b -> 'c) -> ('a * 'b) -> 'c

fold f (a, b) applies f to a and b.

Sourceval map : ('a -> 'c) -> ('b -> 'd) -> ('a * 'b) -> 'c * 'd

map f g (a, b) applies f to a and g to b.

Sourceval iter : ('a -> unit) -> ('b -> unit) -> ('a * 'b) -> unit

iter f g (a, b) first applies f to a, and then g to b.

Sourceval map_fst : ('a -> 'c) -> ('a * 'b) -> 'c * 'b

map_fst f p applies f to p's first component.

Sourceval map_snd : ('b -> 'c) -> ('a * 'b) -> 'a * 'c

map_snd f p applies f to p's second component.

Predicates and comparisons

Sourceval equal : ('a -> 'a -> bool) -> ('b -> 'b -> bool) -> ('a * 'b) -> ('a * 'b) -> bool

equal eqa eqb (a1, b1) (a2, b2) is true if and only if eqa a1 a2 and eqb b1 b2 are both true.

Sourceval compare : ('a -> 'a -> int) -> ('b -> 'b -> int) -> ('a * 'b) -> ('a * 'b) -> int

compare cmpa cmpb is a total order on pairs using cmpa to compare the first component, and cmpb to compare the second component. It is implemented by a lexicographic order.