如何在 Ruby 中将一个数组添加到另一个数组而不最终得到多维结果？

I tried:

somearray = ["some", "thing"]
anotherarray = ["another", "thing"]
somearray.push(anotherarray.flatten!)

我期望

["some", "thing", "another", "thing"]

but got

["some", "thing", nil]

你有一个可行的想法，但是#flatten!放在错误的地方——它压平了接收器，所以你可以用它来转动[1, 2, ['foo', 'bar']] into [1,2,'foo','bar'].

我无疑忘记了一些方法，但你可以连接:

a1.concat a2
a1 + a2              # creates a new array, as does a1 += a2

or 前置/附加:

a1.push(*a2)         # note the asterisk
a2.unshift(*a1)      # note the asterisk, and that a2 is the receiver

or splice:

a1[a1.length, 0] = a2
a1[a1.length..0] = a2
a1.insert(a1.length, *a2)

or 追加并展平:

(a1 << a2).flatten!  # a call to #flatten instead would return a new array