ruby-on-rails - 我可以将数组与文本分开吗？

Question

如果我有一个这样的数组

["Member", "Friends", "Hello", "Components", "Family", "Lastname"]

我需要在“Components”处拆分它并获取2个数组，它们是

["Member", "Friends", "Hello"]

和

["Family", "Lastname"]

我可以这样做吗？如何做？

Answer 1

您可以使用Array#slice :

class Array
  def msplit(m)
    idx = self.index(m)
    idx ? [self[0..idx-1], self[idx+1..-1]] : nil
  end
end

arr = ["Member", "Friends", "Hello", "Components", "Family", "Lastname"]
a, b = arr.msplit("Components")
a # => ["Member", "Friends", "Hello"]
b # => ["Family", "Lastname"]
a.msplit("Foo") # => nil