package mew

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type t
type code
type modifier
type modifiers
val create : code:code -> modifiers:modifiers -> t
val create_modifiers : modifier list -> modifiers
val code : t -> code
val modifiers : t -> modifiers
val modifier : key:t -> modifier:modifier -> bool
val compare : t -> t -> int
val to_string : t -> string
include Hashtbl.HashedType with type t := t
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

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

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