Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery

Re: Re: compilation errors???

by bikeNomad (Priest)
on Aug 22, 2001 at 09:10 UTC ( #106879=note: print w/replies, xml ) Need Help??

in reply to Re: compilation errors???
in thread compilation errors???

You said:
while(<PAGES>) { push(@pages, $_); #semi colon added }
Perl doesn't care if there's a semicolon there. Generally it's OK not to have one at the end of a block.

But I'd say that the error messages from Perl are a bit cryptic from time to time; for a newbie, it can be somewhat hard to figure out what went wrong.

What you can do is to forget, first, that this is a CGI. Comment out the "use CGI::Carp" and put in instead

use Carp; use diagnostics;
and then run Perl in check-mode: perl -cw and look at the output. You'll get a moderately less cryptic output that starts:

Scalar value @filenames[$i] better written as $filenames[$i] at +line 71 (#1) (W syntax) You've used an array slice (indicated by @) to select a single element of an array. Generally it's better to ask for a sc +alar value (indicated by $). The difference is that $foo[&bar] always behaves like a scalar, both when assigning to it and when evaluati +ng its argument, while @foo[&bar] behaves like a list when you assign to +it, and provides a list context to its subscript, which can do weird t +hings if you're expecting only one subscript. On the other hand, if you were actually hoping to treat the array element as a list, you need to look into how references work, beca +use Perl will not magically convert between scalars and lists for you. + See perlref. Possible unintended interpolation of @filenames in string at lin +e 71. Scalar found where operator expected at line 72, near "] $title" + (#2) (S) The Perl lexer knows whether to expect a term or an operator. + If it sees what it knows to be a term when it was expecting to see an operator, it gives you this warning. Usually it indicates that an operator or delimiter was omitted, such as a semicolon. Global symbol "@pages" requires explicit package name at line 11 +. Global symbol "@filenames" requires explicit package name at lin +e 12. Global symbol "@titles" requires explicit package name at line 1 +3.

This should start you on your way to fixing the problem. The "Global symbol...requires explicit package name" can be cured by declaring your variables using my.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://106879]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (6)
As of 2016-10-22 02:12 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (291 votes). Check out past polls.