Apologies if this is the wrong place for this.
First: what's the deal with bitarrays? I have heard APL implementors
state with great conviction that they are worthwhile and have led to great
performance increases; and I have heard J implementors state with equal
conviction that they are not worth their while at all. I don't know whom
to believe!
Second: is it worth it to add padding for >1-rank arrays? It seems
convenient for major cells (and perhaps more minor cells as well) to be
aligned, and I know of at least one high-performance in-place high-rank
transposition algorithm which requires some degree of padding/alignment.
J's array structure doesn't seem to make any allowance for more than one
shape. Has this approach been tried and found lacking, or is it just
untrodden ground?
-E
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