删除字符串中的第一个“＃”字符 - Rails

Question

如何删除第一个＆＃34;＃＆＃34;字符串的字符？

实施例

"fooo#oooooo#bar"

预期结果：

"fooooooooo#bar"

"fooo#oooooo#bar".delete_first("#") // Exist some method like this?

Answer 1

sub（不是gsub）会这样做：

"fooo#oooooo#bar".sub('#', '') #=> "fooooooooo#bar"