Contents page

Index (83KB)

one-liner wars

one-liner wars: n. A game popular among hackers who code in the
   language APL (see write-only language and line noise).
   The objective is to see who can code the most interesting and/or
   useful routine in one line of operators chosen from
   APL's exceedingly hairy primitive set.  A similar amusement
   was practiced among TECO hackers and is now popular among
   Perl aficionados.
   Ken Iverson, the inventor of APL, has been credited with a
   one-liner that, given a number N, produces a list of the
   prime numbers from 1 to N inclusive.  It looks like this:

(2 = 0 +.= T o.| T) / T <- iN

where `o' is the APL null character, the assignment arrow is a single character, and `i' represents the APL iota.