package ocaml-base-compiler

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Official release 4.08.1

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

4.08.1.tar.gz
sha256=b53ed3d487b83fd49bc181bded066ae8e6fb592cf40514261d27d36050d5db85
md5=723b6bfe8cf5abcbccc6911143f71055

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).