Thanks, got it :-)

One more question about lexical variables. If I define a lexical variable in a block, what happens to the memory storing the value of the lexical variable after the code exits the block?

For example, in the script below. I cannot directly access $tricky outside the block. But it can be done with a reference. My question is if the memory storing the contents of $tricky has been released right after the block ends? If so, does it mean some other programs can write to that memory and when I try to retrieve the value of $tricky with a reference after the block, I may get something unexpected(memory got overwritten by other program)?

#!/usr/bin/pere

my $reference;

{
        my $tricky = "TRICKY";
        $reference = \$tricky;
}

print "\$tricky is not defined\n" unless $tricky ;
# What happens to the memory storing the contents of $tricky?
# Has the memory storing $tricky been released?
print "Using a reference, here you are: $$reference\n";

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In reply to Re^2: Scope of lexical variables in the main script by sophate
in thread Scope of lexical variables in the main script by sophate

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