Would it be possible and/or worthwhile to allow indexing with dropped singleton dimensions with a period modified.
eg a[1,:,:] works as now, returns an Array with 3 dimensions a.[1,:,:] returns an Array with 2 dimensions It sort of fits into the use of . as a modifier to represent broadcasting. On Wednesday, September 3, 2014 6:31:31 AM UTC-6, Stefan Karpinski wrote: > > It depends on what you mean. If you mean non-copying slices, then yes. If > you mean that all singleton slices are dropped, then that seems less likely. > > > On Wed, Sep 3, 2014 at 7:20 AM, Neal Becker <ndbe...@gmail.com > <javascript:>> wrote: > >> I hope the goal is for slicing to work like numpy. >> >> Stefan Karpinski wrote: >> >> > No, this is a pretty contentious issue. A lot of the relevant >> discussion is >> > in #4774 <https://github.com/JuliaLang/julia/issues/4774>. The one >> thing >> > everyone agrees on which is going to happen in 0.4 for sure is that >> slicing >> > will generally create views into the original array rather than copying >> the >> > data. >> > >> > >> > On Tue, Sep 2, 2014 at 2:24 PM, Christoph Ortner >> > <christop...@gmail.com <javascript:> >> >> wrote: >> > >> >> >> >> >> >> On Tuesday, 2 September 2014 19:12:01 UTC+1, Stefan Karpinski wrote: >> >>> >> >>> Are slices in Julia any worse than in Matlab? If so, what does Matlab >> do >> >>> that's better? I agree that our current slicing needs improvements >> (they >> >>> are planned), but it is largely due to its Matlab heritage. >> >>> >> >> >> >> I did not mean to apply that Julia is worse in this respect. Off the >> cuff, >> >> I would say slicing is no better or worse than in matlab. And, for the >> >> record, slicing multi-dimensional arrays in Matlab has been driving me >> mad >> >> for some quite some time. >> >> >> >> I've skimmed the discussions in the "issues" lists on github, and I >> very >> >> much liked the idea of distinguishing >> >> a[i:i, :, :] >> >> from >> >> a[i, :, :] >> >> until I remembered that I want >> >> a[i,:] >> >> to be a row-vector. But I can't have the cake and eat it too. >> >> >> >> Is there a consensus yet what the final slicing behaviour will be? >> >> >> >> --Christoph >> >> >> >> >> -- >> -- Those who don't understand recursion are doomed to repeat it >> >> >
