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pure functions vs. functions

• To: mathgroup at smc.vnet.net
• Subject: [mg57415] pure functions vs. functions
• From: "Marcin Rak" <umrakmm at cc.umanitoba.ca>
• Date: Fri, 27 May 2005 04:56:53 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

Hey everyone, I had a beginner question:  what exactly is the difference 
between a pure function and just a function?
ie. the difference between declaring functions using
f[arg1_,...,argn_] := "some expression making use of the arguments"

and explicilty calling Function[{arg1_,...,argn_}, "same expression 
making use of the arguments"]

They have different heads!!

Thanks
MR

• Follow-Ups:
  • Re: pure functions vs. functions
    • From: DrBob <drbob@bigfoot.com>