I used to know APL2 well, and worked on some large workspaces at Merrill Lynch, 10K's of LoCs. I really liked the language but not the job. There were language dialects, you could tell if somebody had a Sharp or STSC background, or if they had come from Morgan Stanley (the code at Merrill and Lehman was pretty similar, at least in the area i worked in). Interesting times.
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also compare "under" in J to loan patterns and all the resource allocation mechanisms in algol family languages
Right. On the PC I started off with STSC. I had a brief exposure to APL on mainframes but the PC version was far more capable and useful. I liked some of the direction taken by IBM with APL2 (nested arrays and other primitives) while keeping to the concept of notation being just as powerful as abstraction.
Also, our 10K LOC workspaces is potentially equivalent to hundreds of thousands of lines of code in something like C. Another way to put it is that a single programmer can do the job of five or ten programmers in another language. And do it faster.
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also compare "under" in J to loan patterns and all the resource allocation mechanisms in algol family languages
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