Re: Returning specific data from a webpage?
- From: anno4000@xxxxxxxxxxxxxxxxxxxxxxx (Anno Siegel)
- Date: 7 Jul 2005 10:29:36 GMT
A. Sinan Unur <1usa@xxxxxxxxxxxxxxxxxxx> wrote in comp.lang.perl.misc:
> Gunnar Hjalmarsson <noreply@xxxxxxxxx> wrote in
> news:3j3129Fnr3sdU1@xxxxxxxxxxxxxx:
>
> > demolitionz@xxxxxxxxx wrote:
> >> A. Sinan Unur wrote
> >>>
> >>> Those should be
> >>> use strict;
> >>> use warnings;
> >>> Case matters in Perl.
> >>> Please read the posting guidelines for this group.
> >>
> >> Sorry, I was following the guidelines but I used the wrong case in
> >> the actual script itself and so copied and pasted wrong. Newbie
> >> mistake (we were all newbies once, remember?)
> >
> > Now you are lying, don't do that!! If you had used wrong cases in the
> > actual script, the program hadn't compiled, and you hadn't talked
> > about "successfully receiving a response page".
>
> The OP might be on Windows where the case insensitive nature of the
> operating system can play nasty tricks on the unsuspecting individual.
> Indeed:
>
> D:\Home\asu1> cat ttt.pl
> #!/usr/bin/perl
>
> use Strict;
> use Warnings;
Same for Mac (OS X or earlier), at least when run on a case-insensitive
file system.
At first sight it looks pretty harmless, after all Perl finds the
intended module, so all is fine. However, a potential import()
method in the module will *not* be found because Perl looks for
->Warnings::import (in the case of "warnings"), where case matters.
This doesn't lead to an error message either (only if parameters were
given).
So the module *has* been loaded, but then some things the code expects
to be done have *not* been done. The resulting situation can be very
confusing.
Anno
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