Fred Appleyard. The basic objects in the system were in "Direct Definition" (Iverson, 1976, 1980), and Falkoff and Iverson's The Design of APL was cited. Hui left Alberta Energy shortly after being promoted to a non-APL and non-programming position, and was out of work, and had no access to computers, from September 1985 to April 1986. This gave him plenty of time for intense study of Iverson's Rationalized APL (1983) and A Dictionary of the APL Language, as it was then named. Hui and his wife Stella had two children. He died on October 16, 2021 from cancer. J language In the early 1990s, Ken Iverson and Hui began collaborating on an advanced continuation of an APL-like language which they named J. The improvements were intended to fix some of the persistent character set issues that had plagued APL since its inception, and to add new advanced features such as support for parallel multiple instruction, multiple data (MIMD) operations. It was intended that the J language be an improvement over then extant APL. The J interpreter and language continue to evolve. In 1996, he received the Kenneth E. Iverson Award for Outstanding Contribution to APL. References External links , JSoftware, creators of J Memorial webpage 1953 births 2021 deaths Canadian computer programmers Hong Kong emigrants to Canada I. P. Sharp Associates employees Naturalized citizens of Canada Programming language designers University of Alberta alumni University of Toronto alumni APL implementers