J is an actively used programming language created in 1990. The J programming language, developed in the early 1990s by Kenneth E. Iverson and Roger Hui, is a synthesis of APL (also by Iverson) and the FP and FL function-level languages created by John Backus. To avoid repeating the APL special-character problem, J uses only the basic ASCII character set, resorting to the use of the dot and colon as inflections to form short words similar to digraphs. Read more on Wikipedia...

29Years Old 857Users 2Jobs

Example code from the Hello World Collection:

NB. Hello World in J
'Hello World' 1!:2(2)

Example code from Linguist:

#!/bin/jconsole
echo 'Hello, GitHub!'
exit ''

Example code from Wikipedia:

3 |. 1 0 1 1 0 0 1 1 1 1 1             NB. rotate
1 0 0 1 1 1 1 1 1 0 1

Last updated August 25th, 2019