Oops, not sure where I got that idea, you are correct! I could have sworn I
tried that in the REPL... Brain glitch I suppose.
On Wednesday, July 23, 2014 4:52:08 PM UTC-7, Ross Boylan wrote:
>
> On Wed, 2014-07-23 at 14:43 -0700, Sam L wrote:
> >
> > It seems odd that [1; 2] != [1 2]'; typeof shows the former
> > is
> > 1-dimensional and the latter 2-dimensional (if I'm
> > interpreting
> > correctly), but that seems kind of inconsistent.
> >
> > A similar issue with indexing surprised me recently. If A is a 2-d
> > array, A[:, 1] is a 1-d array but A[1, :] is a 2-d array. The
> > behavior you pointed out can sort of be deduced from concatenation
> > section of the multi-dimensional arrays part of the manual, and the
> > indexing behavior is in the indexing section. ("Trailing dimensions
> > indexed with scalars are dropped.")
> >
> > Maybe those points should be emphasized in the manual.
> The only reason I was aware of the problem was that the
> http://bogumilkaminski.pl/files/julia_express.pdf document highlights
> it, along with the gotcha you ran into.
> >
> > By the way, [1; 2] does happen to equal [1 2]' because [1 2]' reshapes
> > [1 2] to a 2x1 array. However, [1; 2]' != [1 2].
> Huh?
> julia> [1; 2] == [1 2]'
> false
>
> julia> isequal([1; 2], [1 2]')
> false
>
> Ross
> >
>
>
>
