原帖由 aaronvox 于 2006-7-20 13:19 发表
强烈要求大虾解释下....
see perldoc -f lc
lc EXPR -- Returns a lowercased version of EXPR.
This is the internal function implementing the "\L" escape in double-quoted strings.
......
see perldoc perlre
\L lowercase till \E (think vi)
\U uppercase till \E (think vi)
\E end case modification (think vi)
欢迎光临 Chinaunix (http://bbs.chinaunix.net/) | Powered by Discuz! X3.2 |