Re: ReplaceAll and rules from a list v7.0
- To: mathgroup at smc.vnet.net
- Subject: [mg104277] Re: [mg104227] ReplaceAll and rules from a list v7.0
- From: Adriano Pascoletti <adriano.pascoletti at dimi.uniud.it>
- Date: Sun, 25 Oct 2009 01:11:05 -0400 (EDT)
- References: <200910240640.CAA07557@smc.vnet.net>
In[1]:= l = {{1, 1}, {2, 2}, {3, 3}}; Apply[Plus, l, {1}] Out[2]= {2, 4, 6} In[3]:= l /. {x_, y_} :> x + y Out[3]= {2, 4, 6} Adriano Pascoletti 2009/10/24 kristoph <kristophs.post at web.de> > Hi, > > Suppose I have the equation > > x=a+b > > and the list > > l={{1,1},{2,2},{3,3}} > > How can I quickly assign the list to the above equation, that is, I > would like to get the following result > > {2,4,6} > > The first element of each sub-list should be assigned to a and the > second to b. > > Thanks in advance. > Kristoph > >
- References:
- ReplaceAll and rules from a list v7.0
- From: kristoph <kristophs.post@web.de>
- ReplaceAll and rules from a list v7.0