« first day (22 days earlier)      last day (2929 days later) » 

09:20
@AndrewSavinykh Since the publication of Mastering Dyalog APL, we've added 3 operators, and soon that will be 5, plus 4 functions. This is besides numerous system functions, and an entirely new syntax (function trains)/programming paradigm (tacit/points-free).
Sure, I probably should have worded it better. What I meant it is unlikely that a book about APL becames obsolete in the last 8 years.
09:42
@AndrewSavinykh I would agree, however, the author has refused to conduct any more live courses. I asked him why. He said he had become obsolete :-)
He felt that to teach APL, he had to master all the new stuff, and he didn't feel confident enough with e.g. (rank).

« first day (22 days earlier)      last day (2929 days later) »