in reply to
Arbitrary Levels Of Recursion?
Even easier see tilly's solution in "...perils of porting...".
I took me a while to actually wrap my head around what goes on in that snippet ;)
qq/madams55075.spamtrap.@comcast.net/ =~ s/\.spamtrap\.//;
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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