是否可以指定splat应匹配的元素数量?类似的东西:
foo = [1, 2, 3, 4, 5, 6]
[firstThree...(3), fourth, rest...] = foo
console.log firstThree // [1, 2, 3]
console.log forth // 4
console.log rest // [5, 6]
答案 0 :(得分:1)
据我所知,没有办法增加对splat可以采用的参数数量的限制。
但您可以使用范围(在Loops and Comprehensions Docs中搜索range
)在解构分配中获得类似的语法:
foo = [1, 2, 3, 4, 5, 6]
[firstThree, fourth, rest] = [foo[0..2], foo[3], foo[4..-1]]
firstThree
# => [1, 2, 3]
fourth
# => 4
rest
# => [5, 6]