Re: Why is y a local variable here?

*To*: mathgroup at smc.vnet.net*Subject*: [mg63099] Re: [mg63085] Why is y a local variable here?*From*: ggroup at sarj.ca*Date*: Wed, 14 Dec 2005 04:36:00 -0500 (EST)*References*: <200512130841.DAA08255@smc.vnet.net>*Reply-to*: ggroup at sarj.ca*Sender*: owner-wri-mathgroup at wolfram.com

On Tuesday, December 13, 2005 at 03:41 GMT -0500, Steven T. Hatton wrote: <snip> > I do not understand why y is not "contaminated" by the global value when it > appears in sd[y_] = SDP[n - 1, y];. Can someone explain this? Don't you need to use SetDelayed instead of Set? In other words, doesn't the syntax for a function definition need to be something like: sd[y_]:=SDP[x-1, y]; or sd=Function[y, SDP[x-1,y]; ?

**References**:**Why is y a local variable here?***From:*"Steven T. Hatton" <hattons@globalsymmetry.com>