• unknown (b.)


In the early 1990s, Ken Iverson and Roger Hui began collaboration on an advanced continuation of an APL-like language which they called J. The improvements not only were intended to fix some of the persistent character set issues that had plagued APL since its inception, but to add new advanced features such as support for parallel MIMD operations. It was intended that the J language be an improvement over existing APL. The J interpreter and language continue to evolve today.