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What namespace is CGI:ReadParse() using?

by Cody Pendant (Prior)
on Jul 01, 2002 at 02:12 UTC ( #178449=perlquestion: print w/ replies, xml ) Need Help??
Cody Pendant has asked for the wisdom of the Perl Monks concerning the following question:

I was just going over a script which uses the deprecated, non-OO form of getting the variables from CGI.pm, the one where you do CGI:ReadParse() and it puts everything into a hash called %in.

Leaving aside the "stop doing it that way" answers, how do I make my script valid using strict if it uses this hash -- it's not my hash, after all.
--

($_='jjjuuusssttt annootthheer pppeeerrrlll haaaccckkeer')=~y/a-z//s;print;

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Re: What namespace is CGI:ReadParse() using?
by clintp (Curate) on Jul 01, 2002 at 02:16 UTC
    Use the fully qualified name of the variable (%main::in) or declare the variable with our %in in your program. (Presumably it's using %main::in. Adjust accordingly otherwise.)
      So, the hash is in the main namespace? And what does one do to make code which uses it strict-proof -- I'm missing something obvious, aren't I?
      --
      ($_='jjjuuusssttt annootthheer pppeeerrrlll haaaccckkeer')=~y/a-z//s;print;
        The bog standard our %in; in main - or if you're using an older Perl, use vars qw(%in);

        Makeshifts last the longest.

Re: What namespace is CGI:ReadParse() using?
by theorbtwo (Prior) on Jul 01, 2002 at 02:19 UTC

    I'm not sure if this qualifies as a "stop doing it that way" but it seems that Vars is exactly what you want. To paraphrase the docs,

    use CGI ':cgi-lib'; %in = Vars;
    .

    Or, do an our %in at the top, or use %::in.


    We are using here a powerful strategy of synthesis: wishful thinking. -- The Wizard Book

Re: What namespace is CGI:ReadParse() using?
by mattriff (Chaplain) on Jul 01, 2002 at 02:32 UTC
    I second theorbtwo's recommendation to use Vars(), but in quick testing it looks like you can declare a hash and pass a reference to it as an argument to ReadParse():
    my %vars; CGI::ReadParse(\%vars);
    I used %vars to illustrate it could have any name, but of course you could use %in if you needed for compatibility.

    UPDATE: And clintp is right on both counts, by the way. So, if you are going to use ReadParse() you are probably best off declaring our %in; and forgetting about it. But "there's more than one way to do it," and all of that. :)

    - Matt Riffle

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