ruby - 将数组转换为散列，其中键是索引

Question

我正在将数组转换为散列，其中键是索引，值是该索引处的元素。

这是我的做法

# initial stuff
arr = ["one", "two", "three", "four", "five"]
x = {}

# iterate and build hash as needed
arr.each_with_index {|v, i| x[i] = v}

# result
>>> {0=>"one", 1=>"two", 2=>"three", 3=>"four", 4=>"five"}

是否有更好的(从“更好”一词的任何意义上说)的方法？

Answer 1

arr = ["one", "two", "three", "four", "five"]

x = Hash[(0...arr.size).zip arr]
# => {0=>"one", 1=>"two", 2=>"three", 3=>"four", 4=>"five"}