我有下面的数组

cities = ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"]

我想从数组中删除空白元素,并希望得到以下结果:

cities = ["Kathmandu", "Pokhara", "Dharan", "Butwal"]

有没有像compact这样不需要循环的方法?


当前回答

已经有很多答案了,但如果你在Rails世界里,这里有另一种方法:

 cities = ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"].select &:present?

其他回答

使用拒绝:

>> cities = ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"].reject{ |e| e.empty? }
=> ["Kathmandu", "Pokhara", "Dharan", "Butwal"]

在我的项目中,我使用delete:

cities.delete("")

你可以试试这个

 cities.reject!(&:empty?)

最短路径城市。select(&:present?)

试试这个:

puts ["Kathmandu", "Pokhara", "", "Dharan", "Butwal"] - [""]