最后一次出现字符时分割字符串

Question

我有下面的字符串：

this sentence: should be: split after last colon: sentence

我想在最后一个冒号（:)上拆分上述字符串，以使结果数组包含以下两个元素：

["this sentence: should be: splited after last colon:", "sentence"]

Answer 1

尝试简单的代码：

s = 'this sentence: should be: splited after last colon: sentence'
s =~ /(.*):(.*)?/
[ $1 << ':', $2 ]
# => ["this sentence: should be: splited after last colon:", " sentence"]