ruby-on-rails - 如何对字符串上的每个其他字符执行操作？

Question

如何仅将字符串的偶数字母大写？

我试过了：

str = "apples"; str.capitalize

score 3 · Accepted Answer

"abcdefgh".gsub /..?/, &:capitalize
=> "AbCdEfGh"

"abcdefgh".gsub /(?!^)..?/, &:capitalize
=> "aBcDeFgH"

Use string.gsub! instead of string.gsub if you want to modify your original string.

score 0 · Accepted Answer

0

string.scan(/..?/).map(&:capitalize) * ''

于 2012-07-16T06:56:02.680 回答

2 回答 2