in reply to
Problems to solve for Perl Beginners
Yes, this question comes up a lot.
See for example Re: Real Life Perl Exercises and Re: Perl Exercises: For Beginners.
Also, this recent thread may be of interest: Where Do I Go Next?.
Update: See also The 2011 Perl 6 coding contest.
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.
Results (26 votes),