new_perl questions

• What's wrong with my regex in perl?
• In perl,how can I know how long a specific file has been existing?
• In Perl, when is it passing by value/reference? [duplicate]
• Why two `{` is required here?
• When do you use fopen instead of open?
• Moving a file to another directory in Perl?
• why complement searchlist doesn't work?
• How do I dump blessed hash ref?
• What's the point of gcc's -pthread and -rdynamic option?
• What does this line in DBI.pm do?

new_perl answers