Greets Folks,
2 Questions here...
1.) I am self taught, so I dont know all the formal
details of Perl coding, but every now and then I run
across code that reads like alphabet soup... for
instance, lines like (taken at random):
The conditional here...
if ($cgi->param('forum') =~ /^(\d+)$/))
Or, like:
sub trim
{
my $str = shift;
return "" if ! defined $str;
$str =~ s/^\s+//;
$str =~ s/\s+//;
return($str);
}
I dont understand how to read whats happening in those
sections. I think it's called parsing, but I need
some sort of confirmation and direction there... I
mean, its not just a question of how to do it, but
also why and when to parse input...
Anyway, is parsing what I need to learn to understand
code like the examples above? And, if it is, then
where could I begin to learn how to parse effectively
enough to get a real grip on it?
Thanks,
Will
__________________________________________________
Do you Yahoo!?
Yahoo! Mail Plus - Powerful. Affordable. Sign up now.
http://mailplus.yahoo.com
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
