Re^2: ptkdb: 'my' variable in sub retains value between calls

[leonidlm]

Thank you all. The variable names are just for an example, of course I used a proper names in my program, it is more than 2000 lines, I don't think I would manage elsewhere.

[GrandFather]

$foo and $bar are good time honored place holder names for variables and are almost as easy to type as $a and $b.

[Anonymous Monk]

If, in addition to using warnings with its very helpful message referred to in other replies, you had been using strict, Perl would never have let you make the mistake in the first place if you were using names other than $a and $b!