什麼是最優雅的Ruby語句來分割一個字符串中的兩個兩個字符？

Question

我有字符串"abigword"，我想採取陣列["ab", "ig", "wo", "rd"]。概括來說，給定一個字符串，我想把它的組成字符數組配對成兩個二。

什麼是最優雅的Ruby方式來做到這一點？

Answer 1

"abigword".scan(/../) # => ["ab", "ig", "wo", "rd"] 

它也可以處理奇數個字符，如果你想：

"abigwordf".scan(/..?/) # => ["ab", "ig", "wo", "rd", "f"] 

Answer 2

兩個非正則表達式版本：

#1: 
p "abigword".chars.each_slice(2).map(&:join) #=> ["ab", "ig", "wo", "rd"] 

#2: 
s, a = "abigword", [] 
a << s.slice!(0,2) until s.empty? 
p a #=> ["ab", "ig", "wo", "rd"]