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Module

x/rimbu/sorted/map-custom/implementation/immutable.ts>SortedMapNode#modifyAtInternal

Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.
rimbu-org/rimbu
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method SortedMapNode.prototype.modifyAtInternal
import { SortedMapNode } from "https://deno.land/x/rimbu@1.2.1/sorted/map-custom/implementation/immutable.ts";

Parameters

atKey: K
options: { ifNew?: OptLazyOr<V, Token>; ifExists?: ((currentEntry: V, remove: Token) => V | Token) | V; }