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Re: Creating dynamic variables

by Anonymous Monk
on Jan 03, 2013 at 10:29 UTC ( #1011434=note: print w/replies, xml ) Need Help??


in reply to Creating dynamic variables

You could do it with anonymous subroutines. Just assume that every variable is a subroutine. It's not very pretty, though.

my %vars; # something to hold all your variables in sub set_var { my ($name, $value) = @_; $vars{$name} = $value; } sub get_var { my $name = shift; my $var = $vars{$name}; return ref $var eq 'CODE' ? $var->() : $var; } set_var(foo => "hello"); set_var(x => sub { return get_var('foo') . get_var('y') }); set_var(y => 'world'); print get_var('x'), "\n";

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[james28909]: Good morning!
[james28909]: I have a problem I am trying to solve. I am packaging scripts using pdk and would like the verify the executable name each time it is executed
[Corion]: Hi James!
[james28909]: I looked through the docs, and see that PerlApp::exe() is suppose to return this information but whenever i try to use this, i get the error "Undefined subroutine &PerlApp::exe called"
[james28909]: i just want to verify the integrity of the executables name each time it is run.
[Corion]: Weird. this documentation says what you say.
[Corion]: I assume you are experiencing this with your packaged program. Maybe also include PerlApp.pm in the packaging list?
[james28909]: has anyone else run into this problem? i have tried searching but have not returned many results
[james28909]: ah, good idea.
[Corion]: What does print $PerlApp::VERSION output?

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