I have a global variable going out of scope

Global variables don't go out of scope. That's because they are global. In the code you've posted there's no global variable at all. There's a $gVar which is lexically scoped via my on file level.

Do you mean, $gVar doesn't hold the last hashref from $listOfHashRef after calling Foo() ? That's because the $gVar as a foreach iterator aliases (masks) the outer $gVar. Consider: 

use strict;

sub generateList {
    my $ref;
    push @$ref, { funPtr => do { my $x = $_; sub { print "in $x\n" } }
+ }
        for qw(foo bar);
    $ref;
}

my $gVar;

sub Foo
{

   my $listOfHashRef = generateList();
   my $functionPtr;

   foreach (@$listOfHashRef) {
       $gVar = $_;
       $functionPtr = $gVar->{funPtr};
       # Assert:  $gVar has all of its values here
       $functionPtr->();
   }
}

# Assert:  The $gVar->{funPtr} does indeed point to Bar
sub Bar
{
    print "$gVar\n";
    # Assert:  $gVar is null
}
Foo();
Bar();
__END__
in foo
in bar
HASH(0x88a1660)

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In reply to Re: Tricky scope problem by shmem
in thread Tricky scope problem by Anonymous Monk

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