package orsetto

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package orsetto
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The signature of a map implementation module.

type 'a t

The abstract type of a map.

The type of a search key

type key

The type of an index key

val nil : 'a t

A distinguished empty map.

val empty : 'a t -> bool

Use empty m to test if m is an empty map.

val of_seq : (key * 'a) Seq.t -> 'a t

Use of_seq s to make a map by consuming the unordered sequence of domain and co-domain values s.

val member : search -> 'a t -> bool

Use member k m to test whether k is in the domain of m.

Use search k m to find the co-domain Some v of k in m. Returns None if k is not in the domain of m.

val require : search -> 'a t -> 'a

Use require k m to find the co-domain of k in m. Raises Not_found if k is not in the domain of m.

module Unsafe : sig ... end

Unsafe interfaces depend on the internal structure of maps.