size() function

返回 Iterable/AsyncIterable 的大小。

Signature:

declare function size<A extends Iterable<unknown> | AsyncIterable<unknown>>(
  iterable: A,
): ReturnValueType<A, number>;

Example

size([1, 2, 3, 4]); // 4
size("abcde"); // 5

await size(toAsync([1, 2, 3, 4])); // 4

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