2019年7月2日
非捕获分组 正向预查 与反向预查
摘要： ?: is for non capturing group ?= is for positive lookahead ?! is for negative lookahead ?<= is for positive lookbehind ?<! is for negative lookbehind英 阅读全文
posted @ 2019-07-02 16:24 hh9515 阅读(728) 评论(0) 推荐(0) 编辑