You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
34 lines
769 B
34 lines
769 B
import { Iterable } from './Iterable'
|
|
import {collect, Collection} from './Collection'
|
|
|
|
/**
|
|
* A basic Iterable implementation that uses an array as a backend.
|
|
* @extends Iterable
|
|
*/
|
|
export class ArrayIterable<T> extends Iterable<T> {
|
|
constructor(
|
|
/**
|
|
* Items to use for this iterable.
|
|
*/
|
|
protected items: T[],
|
|
) {
|
|
super()
|
|
}
|
|
|
|
async at(i: number): Promise<T | undefined> {
|
|
return this.items[i]
|
|
}
|
|
|
|
async range(start: number, end: number): Promise<Collection<T>> {
|
|
return collect(this.items.slice(start, end + 1))
|
|
}
|
|
|
|
async count(): Promise<number> {
|
|
return this.items.length
|
|
}
|
|
|
|
clone(): ArrayIterable<T> {
|
|
return new ArrayIterable([...this.items])
|
|
}
|
|
}
|