package ocaml-base-compiler

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Official release 4.10.0

Install 

dune-project
 Dependency

ocaml.org Edit opam file Versions (70)

Authors

  1. Xavier Leroy

Maintainers

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

Sources

4.10.0.tar.gz
sha256=58bae0f0a79daf86ec755a173e593fef4ef588f15c6185993af88ceb9722bc39

doc/stdlib/Stdlib/Hashtbl/module-type-HashedType/index.html

Module type Hashtbl.HashedType

The input signature of the functor Hashtbl.Make.

type t

The type of the hashtable keys.

val equal : t -> t -> bool

The equality predicate used to compare keys.

val hash : t -> int

A hashing function on keys. It must be such that if two keys are equal according to equal, then they have identical hash values as computed by hash. Examples: suitable (equal, hash) pairs for arbitrary key types include

  • ((=), Hashtbl.hash) for comparing objects by structure (provided objects do not contain floats)
  • ((fun x y -> compare x y = 0), Hashtbl.hash) for comparing objects by structure and handling Stdlib.nan correctly
  • ((==), Hashtbl.hash) for comparing objects by physical equality (e.g. for mutable or cyclic objects).