主题是一个字符字符串,层次结构的每一层都以某种形式分界(通常使用正斜杠),例如stocks/IBM。
A topic is a character string with each level in the hierarchy delimited in some fashion (often by a slash), for example, stocks/IBM.
定界符:一个字符或者字符串,用来确定字符分割时候的分界。
A character or string used to indicate where a string should be split.
定界符:一个字符或者字符串,用来确定字符分割时候的分界。
A character or string used to indicate where a string should be split.
应用推荐