➖ Pop

pengzhanbo

112字小于1分钟

2022-12-01

题目

Github: Pop

实现一个通用Pop<T>，它接受一个数组T，并返回一个由数组T的前length-1项以相同的顺序组成的数组。

type arr1 = ['a', 'b', 'c', 'd']
type arr2 = [3, 2, 1]

type re1 = Pop<arr1> // expected to be ['a', 'b', 'c']
type re2 = Pop<arr2> // expected to be [3, 2]

::: detailer Answer

type Pop<T extends any[]> = T extends [...infer R, any] ? R : T

:::