[kragen]

As I said below, I've been intrigued by APL ever since I picked up a couple of discarded APL books in 1995 and read through them repeatedly, taking profuse notes. I keep hoping that someday I will learn APL well enough to be able to just jot down program fragments and be sure that they'll work, rather than giving me a rank error; the same is true of APL descendants like Numpy, although I have a lot more experience with them. I watched Roger Hui's "Tour de Force of APL in 16 Expressions", and although I understood the expressions, I don't understand how to design them. There are a bunch of notes in Dercuano about variants of APL. I've downloaded Aaron Hsu's dissertation, but I haven't read it yet.

For now, though, I can write out algorithms in what seems to me to be a straightforward fashion in paperalgo.

Some APLish things I've done include recoding T$'s 64-byte demo Klappquadrat in Numpy http://canonical.org/~kragen/demo/klappquadrat.html and this keyboard-driven structure-editing calculator with broadcasting over one-dimensional vectors http://canonical.org/~kragen/sw/dev3/rpn-edit#50_iota_2_ln_*...