Re: How to evaluate parts of an expression, but not other parts?
- To: mathgroup at smc.vnet.net
- Subject: [mg122750] Re: How to evaluate parts of an expression, but not other parts?
- From: Julian Francis <julian.w.francis at gmail.com>
- Date: Wed, 9 Nov 2011 06:26:10 -0500 (EST)
- Delivered-to: l-mathgroup@mail-archive0.wolfram.com
- References: <32289202.13251.1320484280567.JavaMail.root@m06>
Thank you all for your suggestions. I have just realised I can probably get the effect I am looking for by just not using the built in Mathematica Plus function. If I call the function MyPlus instead, then MyPlus[ MyPlus[a,b] , MyPlus[c,d] ] does the evaluation for a,b,c,d but doesn't try to combine the MyPlus's together. Not surprisingly as it can't presumably without any other definitions. I think it's pretty simple, and does what I want. I will have a look at some of your other Hold solutions (just in case I want to use this elsewhere to actually evaluate whole expressions and do want the Plus's to be evaluated). Once again, thank you all. Kind regards, Julian.