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

Problem with SetDelayed lhs:=rhs

• To: mathgroup at smc.vnet.net
• Subject: [mg128247] Problem with SetDelayed lhs:=rhs
• From: zahava.ginny at gmail.com
• Date: Sat, 29 Sep 2012 02:56:54 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• Delivered-to: l-mathgroup@wolfram.com
• Delivered-to: mathgroup-newout@smc.vnet.net
• Delivered-to: mathgroup-newsend@smc.vnet.net

An assignment using SetDelayed, lhs := rhs, maintains rhs in completely unevaluated form.
Thus, if k=5, say, the assignment 

In[1] = f[k,j_]:=rhs[k,j]

yields

In[2] = ?f
Global`f
f[5,j_]:=rhs[k,j]

How can I force the k on the right hand side to be evaluated so that ?f will yield 
f[5,j_]:=rhs[5,j] ? 

Of course, I could define f[5,j_] manually, but I want to automate the procedure over a range of values of k.