reverse() function

返回给定元素的反向顺序的 Iterable/AsyncIterable。注意:除数组外,会评估所有 Iterable,并返回惰性反转的迭代器。

Signature:

declare function reverse<T extends Iterable<unknown> | AsyncIterable<unknown>>(
  iterable: T,
): ReturnIterableIteratorType<T>;

Example

const iter1 = reverse([1, 2, 3]);
iter1.next(); // {value: 3, done: false}
iter1.next(); // {value: 2, done: false}
iter1.next(); // {value: 1, done: false}
iter1.next(); // {value: undefined, done: true}

const iter2 = reverse("abc");
iter2.next(); // {value: "c", done: false}
iter2.next(); // {value: "b", done: false}
iter2.next(); // {value: "a", done: false}
iter2.next(); // {value: undefined, done: true}

// with pipe
pipe([1, 2, 3, 4, 5], reverse, toArray); // [5, 4, 3, 2, 1]

pipe("abcde", reverse, toArray); // "edcba"

see pipe toArray

Open Source Code