1. What's the idiomatic way to delete an item from a list? This doesn't
seem to come up in Learning J. For that matter, what's a good reference
for list slicing ops in J?
2. Is anyone bothered by the lack of a built-in associative list
structure? There are at least two different implementations in Rosetta
Code, but one is very bare-bones and the other uses classes, which I'd
prefer to avoid (I confess to having a bias against OO). I guess J
people have found other substitutes for dicts/hashes/maps/associative
arrays.
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