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Re^2: How do I import a global variable form a package with require?

by nysus (Parson)
on Jul 22, 2021 at 13:58 UTC ( #11135295=note: print w/replies, xml ) Need Help??


in reply to Re: How do I import a global variable form a package with require?
in thread How do I import a global variable form a package with require?

Ah, yes, I remember that. However, what if I want to only import $var at runtime? Am I just stuck fully qualifiying it with A::var? And I still don't get why sub1 imports just fine with require and $var doesn't.

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Re^3: How do I import a global variable form a package with require?
by choroba (Archbishop) on Jul 22, 2021 at 14:05 UTC
    > what if I want to only import $var at runtime?

    What does it mean? If you have code that will be compiled at runtime, it works:

    require A; A->import('$var'); eval 'print $var; 1' or warn $@;

    > why sub1 imports just fine with require and $var doesn't

    Strict checks that variables are declared before you use them. It doesn't check subs when it's sure it's a sub, i.e. when parentheses follow the sub name. Try using sub1 without parentheses: the compiler will only see a bareword, not a sub call, and will complain.

    Update: reworded.

    map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

      OK, that helps clear things up. Thanks for your help!

      $PM = "Perl Monk's";
      $MCF = "Most Clueless Friar Abbot Bishop Pontiff Deacon Curate Priest Vicar";
      $nysus = $PM . ' ' . $MCF;
      Click here if you love Perl Monks

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