On Sat, Mar 15, 2014 at 9:58 AM, Robert Kern <robert.k...@gmail.com> wrote:
> On Sat, Mar 15, 2014 at 2:49 PM, Charles R Harris > <charlesr.har...@gmail.com> wrote: > > > > I favor the weak right option. > > > > 1) Giving '*' higher precedence than `@` makes it easier, to my mind, to > > parse out what is going to happen: all the element-wise multiplications, > > followed by the matrix operations. I'd probably still use parenthesis for > > clarity. > > It seems to me that 'tight' gives the same benefit. Any reasoning for > the preference of 'weak' over 'tight'? > > Two other reasons come to mind. First, '*' is right associative, so I think it is nicer to first view the expression as parsed into blocks separated by '@', which act somewhat like parenthesis at that point, and then evaluate the blocks. Second, and somewhat weaker, it might make it easier to track how arrays are broadcast. Chuck
_______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
