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Re: use warnings vs. perl -w

by chipmunk (Parson)
on Jan 24, 2001 at 19:23 UTC ( #53994=note: print w/ replies, xml ) Need Help??


in reply to use warnings vs. perl -w

As tye said, you can use #!perl -w on Windows. In fact, you can use the #! line on any platform to specify options. perlrun explains why:

The #! line is always examined for switches as the line is being parsed. Thus, if you're on a machine that allows only one argument with the #! line, or worse, doesn't even recognize the #! line, you still can get consistent switch behavior regardless of how Perl was invoked, even if -x was used to find the beginning of the script.
perl itself parses the #! line, even if the operating system ignores it. There are a few other tricks perl does with the #! line, also described in perlrun.


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Re: Re: use warnings vs. perl -w
by idnopheq (Chaplain) on Apr 10, 2001 at 16:35 UTC
    You can also apply '-w' in the file association if you are concerned. Go to "Tools - Folder Options - File Types". Find your PL entry. Edit the Open property and add '-w' and whatever other options you want by default.

    Of course, you could also set this programatically via perl.

    As I recall, before the Grand Unification of AS and GS Win32 perl distributions, you had to add it for GS, though I could be mistaken.

    HTH
    Dex

      Has anyone ever tried using $^W. I never have but it from "perl -d -e 0" I've done this: print "$junk" --- No output $^W = 1 print "$junk" --- Use of uninitialized value in string at (eval 7)C:/Perl/lib/perl5db.pl:1521 line 2 -Jim

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