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DB<115> use warnings; print " $z bla"
Use of uninitialized value $z in concatenation (.) or string at (eval
+39)[multi_perl5db.pl:644] line 2.
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
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