garrettmills
1d5056b753
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34 lines
769 B
TypeScript
34 lines
769 B
TypeScript
import { Iterable } from './Iterable'
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import {collect, Collection} from './Collection'
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/**
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* A basic Iterable implementation that uses an array as a backend.
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* @extends Iterable
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*/
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export class ArrayIterable<T> extends Iterable<T> {
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constructor(
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/**
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* Items to use for this iterable.
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*/
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protected items: T[],
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) {
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super()
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}
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async at(i: number): Promise<T | undefined> {
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return this.items[i]
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}
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async range(start: number, end: number): Promise<Collection<T>> {
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return collect(this.items.slice(start, end + 1))
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}
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async count(): Promise<number> {
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return this.items.length
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}
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clone(): ArrayIterable<T> {
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return new ArrayIterable([...this.items])
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}
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}
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