in reply to
Get the length of a list.
see so called goatse (pseudo-)operator also known as Not suitable for work operator
DB<100> $length =()= (1, 2, 3, 4, 3, 2, 1)
( addicted to the Perl Programming Language)
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 (210 votes),