Your skill will accomplish what the force of many cannot |
|
PerlMonks |
comment on |
( [id://3333]=superdoc: print w/replies, xml ) | Need Help?? |
I'm reading HTTP::headers code. I understand what GET mean, when only one argument, @_ becomes empty and $op will choose GET. But I can't understand PUSH and SET logic before the 2nd "?". Before receiving any value, $seen{field_name} must be empty, so what does $seen{field_name}++ mean? What's difference of PUSH and SET? Another question is if wantarray line. I read http://perldoc.perl.org/functions/wantarray.html but didn't understand."if the context of the currently executing subroutine or eval is looking for a list value". What "the context" refers here, @old returned by $self->_header?
I delete the line about "++" to state more clear about my question. In reply to What's this line means in HTTP::headers? by anaconda_wly
|
|