variable / @typed/fx

RefHashMap.union

Merge another HashMap into this one.

Package version
2.0.0-beta.7
Category
State updates
Since
1.18.0
Member of
RefHashMap

Import

import { RefHashMap } from "@typed/fx";

Access RefHashMap.union through the imported RefHashMap export. Its declaration below describes the member.

This public exposure is a re-export. Its import path is supported; declaration documentation is shared with the other public exposures below.

Signatures

export declare const union: {
    <K, V>(that: HashMap.HashMap<K, V>): <E, R>(ref: RefHashMap<K, V, E, R>) => Effect.Effect<HashMap.HashMap<K, V>, E, R>;
    <K, V, E, R>(ref: RefHashMap<K, V, E, R>, that: HashMap.HashMap<K, V>): Effect.Effect<HashMap.HashMap<K, V>, E, R>;
};

Why

Combines bulk hash map changes in one committed value, giving subscribers one coherent update rather than a partially applied sequence.

Ownership and lifetime

Running union performs one serialized hash map transition and resolves with its committed value. It acquires no resource; failures and services remain those of the source ref.

Other public imports

These import paths expose the same declaration. Each page retains its own public name and signature.

Source