If write physical formula with acceleration or length of the edge of square, human often use $a as variable. Sad about reservation of $a. I have a bad habit of using "a" from other languages.

In reply to Re^2: question about: my $a AND sort {$a <=> $b} keys %hash by rsFalse
in thread question about: my $a AND sort {$a <=> $b} keys %hash by rsFalse

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