On 21 Nov 2016, at 13:55, <to...@tuxteam.de> <to...@tuxteam.de> wrote:
> > it (numpy, to mention a popular one. You don't need to say A[i, :, :], > > you can just say A[i].). However, the maintainers spoke against this, > > so these functions need different names. > > Understandable... but a pity, really. yeah... > Uh, oh. That's NSFW material ;-) My head exploded (faint memories > of APL). check out ‘J for C programmers’, I think it has good explanations. > I do like slice. But I'm perhaps off because I don't quite understand > your mumblings about "the rank of the result would be positive". > What do they return otherwise? Do they throw an exception? They return the element itself. E.g. (array-from #2((a b) (c d)) 0) => #1(a b) (array-from #2((a b) (c d)) 0 0) => a the rank of the second result would be zero (so #0(a)) if the result was always a ‘slice’. This is what I meant. There's a variant which always returns a ‘slice’: (array-from* #2((a b) (c d)) 0) => #1(a b) (array-from* #2((a b) (c d)) 0 0) => #0(a)
