Re: Replacement Rule
- To: mathgroup at smc.vnet.net
- Subject: [mg32071] Re: [mg32064] Replacement Rule
- From: jmt <jmt at agat.net>
- Date: Sat, 22 Dec 2001 04:22:42 -0500 (EST)
- References: <200112210857.DAA25218@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Try yourList/.{x_?AtomQ,y_AtomQ}->x On Friday 21 December 2001 09:57, Brian Higgins wrote: > I have the following list > > l1={{1,2},{3,4},{5,6}}; > > and then I operate on it with the following pattern/replacement rule > > In[3]:= l1 /. {x_, y_} -> x > > Out[3]= {1, 3, 5} > > This is what I would expect. Now consider the following list > > In[4]:= l2 = {{3, 4}, {5, 6}}; > > Then I use the same pattern/replacement rule > > In[5]:=l2 /. {x_, y_} -> x > > Out[5]= {3, 4} > > I was hoping to get > > {3,5} > > What am I missing? The FullForm of l2 is basically the same structure > as l1, as far as I can tell.... > > Brian
- References:
- Replacement Rule
- From: bghiggins@ucdavis.edu (Brian Higgins)
- Replacement Rule