joe has asked for the wisdom of the Perl Monks concerning the following question:
I know you can do this with closures, but I'm wondering
if there is a better way. Here is the example:
So you can see, I want c() to have access to the calling sub's my variables. I know that if I eval the creation of that sub in a() or b() it will work, however I don't want to have to do that for every sub that calls c().a(); b(); print "$var\n"; sub a { local $var = "a\n"; c(); } sub b { local $var = "b\n"; c(); } sub c { # i'm pleasing you to print a or b print "var: $var"; }
Is there a hack to do the above?
If not, here is my next best choice... the sub c() is actually spit out by a class and evaled in the callers package, is it possible to have the eval happen in the callers namespace?
That is:
where SubMaker::make_sub() evals in the callers namespace so that subname() now has access to $var. Is that possible?$b = new SubMaker(); sub a { my $var; $b->make_sub("subname"); subname(); }
thanks.
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