ruby - Ruby - 数组乘法或 JOIN 操作

Question

我有两个数组，

a = [1, 2]
b = [:a]

我想得到结果

[[1, :a], [2, :a]]

有什么方法吗？

score 6 · Accepted Answer

6

a = [1, 2]
b = [:a]
a.product(b)
=> [[1, :a], [2, :a]]

于 2012-04-27T08:28:13.320 回答

score 0 · Accepted Answer

0

你也可以这样做

[a,b*a.size].transpose
#=> [[1, :a], [2, :a]]

于 2012-04-27T08:29:42.697 回答

2 回答 2