java - 摩擦正则表达式 : matching a char except when after by another char

Question

我需要找到一个正则表达式，该正则表达式可以按句点拆分字符串，该句点后面不紧接着右括号 (')')，并在拆分后保留分隔符 '.' .

例如，如果

str = "This is a great (feeling.) thing. It's very interesting."

正则表达式应该将其分成两个字符串:

["This is a great (feeling.) thing.", "It's very interesting."]

我尝试从 this并交换它但不成功。

感谢您的帮助。

Answer 1

所需的结果表明字符串将在句点后面的空格上分割(保留句点)。

str = "This is a great (feeling.) thing. It's very interesting."

str.split(/(?<=\.) +/)
  # => ["This is a great (feeling.) thing.", "It's very interesting."]

(?<=\.)是一个积极的回顾。 ".)"无关紧要。

为了回应下面OP的第二条评论，如果要在后面没有右括号的句点上分割字符串，则可以写:

str = "This is a great (feeling.) thing.It's very interesting."

str.split(/\.(?!\))/)
  #=> ["This is a great (feeling.) thing", "It's very interesting"]

此正则表达式为“匹配后面不紧接右括号的句点”，(?!\) 消极前瞻。