++ Good job improving that part on your own...

Now look at what your original button's sub does: it assigned a new, empty hashref to the $ref_hash variable (as AM pointed out by printing multiple addresses when assigning the variable to multiple empty hashrefs: {}). Your updated one is an improvement, because it's accessing the original memory, rather than creating a new memory space. But you're deleting the keys and their values, rather than keeping the keys and just clearing the values.

update: strike out something that might not be accurate. But your second code was still an improvement, because you learned you needed to de-reference the hashref, rather than assigning a new empty hashref {}

In reply to Re^4: Perl Tk label references by pryrt
in thread Perl Tk label references by thimes

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