38 lines
763 B
TypeScript
38 lines
763 B
TypeScript
import type { Box } from "./box.ts";
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export default class MapArray<K, V> {
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map: Map<K, Box<V>>;
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array: Array<[K, Box<V>]>;
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constructor(iterable?: Iterable<[K, Box<V>]>) {
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this.map = new Map(iterable);
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this.array = iterable ? [...iterable] : [];
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}
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delete(key: K): void {
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if (this.map.delete(key)) {
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this.array[this.array.findIndex((e) => e[0] === key)] =
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this.array[this.array.length - 1];
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this.array.pop();
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}
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}
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set(key: K, value: Box<V>): void {
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if (this.map.has(key)) {
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this.array.find((e) => e[0] === key)![1] = value;
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} else {
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this.array.push([key, value]);
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}
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this.map.set(key, value);
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}
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get(key: K): Box<V> | undefined {
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return this.map.get(key);
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}
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entries(): Array<[K, Box<V>]> {
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return this.array;
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}
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}
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