package ocaml-base-compiler

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Official release 4.08.0

Install

Dune Dependency

ocaml.org Edit opam file Versions (66)

Authors

Xavier Leroy

Maintainers

Sources

4.08.0.tar.gz

sha256=c8ff78d010cb037ac6d6729e40ebdbee109218899007ef23a20b8f459ac186d6

md5=42ed24e9a7c0e3998cab7d5e7c9f7618

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).