MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: precedence for ReplaceAll?

  • To: mathgroup at
  • Subject: [mg110584] Re: precedence for ReplaceAll?
  • From: AES <siegman at>
  • Date: Sat, 26 Jun 2010 03:12:34 -0400 (EDT)
  • Organization: Stanford University
  • References: <i023mj$r4u$>

In article <i023mj$r4u$1 at>,
 Bill Rowe <readnews at> wrote:

> >My first guess is that Mathematica is doing a sort of "double
> >ReplaceAll", where it first tries the pattern given in the delayed
> >assignment, and any symbols matched by that are not tested against
> >the explicit ReplaceAll. But that doesn't explain why the sum works
> >and not the product. Am I thinking about this the wrong way?
> Yes, your thinking here is incorrect.

Just be to be argumentative here:  The OP's thinking obviously doesn't 
agree with what Mathematica actually does.  But what Mathematica does is 
not the only standard of correctness, or even reasonableness, in the 
world.  His thinking is not unreasonable, and not even incorrect by some 
reasonable standards.

  • Prev by Date: Orthogonalize in a discrete setting
  • Next by Date: Re: Newby Q: How to specify reals
  • Previous by thread: Re: precedence for ReplaceAll?
  • Next by thread: Re: precedence for ReplaceAll?