From: Yahya Mowiena <mowiena_at_gmail.com>

Date: Wed, 17 Jun 2009 13:11:27 +0300

Date: Wed, 17 Jun 2009 13:11:27 +0300

Dear All, I have a data structure (The data structure style is down) with some variables C, N and A. There are some Vars representing different values for the previous variables where some variables have common Cs and others don't. Each "A" value has a unique corresponding "N" value . I have a fact with 2 atoms one of them is the A variable's value (i.e. a1,a2,a3.....a14) and the other atom is numeric value, let's give it an abbreviation (P).. For a certain C, I retrieve the value P via the fact mentioned using A and then I multiply the value of P by the value of N corresponds to the same A to fit a certain criteria. What if I want to get the sum of the previous products for the different Ns and Ps of the whole C?.. to make it clearer what if I want to have (N*P) of A1 + (N*P) of A2 + (N*P) of A3+................(N*P) data structure var1 = xxxxx{c= C, a=A, n=N} Is it doable? Thanks a lot Best Regards -- Yahya MowienaReceived on Wed Jun 17 2009 - 10:11:38 CEST

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