数组前的Ruby *运算符 [英] Ruby * operator before array

问题描述

可能重复:
了解范围和数组中的红宝石摔得痛

Possible Duplicate:
Understanding ruby splat in ranges and arrays

有人可以告诉我以下代码中的*是什么吗?

could anyone tell me what the * does in the following piece of code?

line = "name=yabbi;language=ruby;"
Hash[*line.split(/=|;/)]

谢谢.

推荐答案

*是splat运算符.它用于将数组拆分为参数列表.

* is the splat operator. It is used to split an array into a list of arguments.

line.split(/=|;/)返回一个数组.要创建哈希，必须将数组的每个元素作为单独的参数传递.

line.split(/=|;/) returns an array. To create a Hash, each element of the array must be passed as an individual parameter.

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