|Do you know where your variables are?|
But probably instead should be fixed within the Perl interpreter so as to special-case $a and $b further.
I always thought that it would be (would have been) better to use $A & $B for this instead.
That might at least prevent all these pointless "Don't use $a & $b" pseudo-commandments.
With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.