Ilya Zakharevich on Mon, 08 Feb 2021 04:39:42 +0100


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Re: #matr~ vs ##matr


On Fri, Feb 05, 2021 at 03:10:05PM +0100, Bill Allombert wrote:
> >   Is #matr~ optimized by the compiler?
> 
> No, but you can do either #mat[,1] or matsize(mat)[1]

Well, it was discussed here already: the former is not equivalent to
#matr~.  They differ if #mattr=0.

Thisi is ONE of the reasons why I think ## and ### may be quite
useful.

Ilya