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MathGroup Archive 1998

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Re: Function as an argument to a function

  • To: mathgroup at smc.vnet.net
  • Subject: [mg13846] Re: [mg13814] Function as an argument to a function
  • From: BobHanlon at aol.com
  • Date: Sat, 29 Aug 1998 04:41:21 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

myFunction[expr_, sym_Symbol:x, param_:1] := 
	expr /. sym -> param

myFunction[f[x]]

f[1]

myFunction[f[y], y, z]

f[z]

myFunction[Exp[x]]

E

myFunction[y^2+3y+7, y]

11

myFunction[y^2+3y+7, y, 2]

17

Bob Hanlon

In a message dated 8/28/98 8:25:30 AM, jlakkako at jade.hut.fi wrote:

>I want to pass a function as an argument to a function I am developing.
>For example: Myfunction[Exp[x]]
>
>I would like Myfunction to return the value of it's parameter function
>when (for example) x=1.
>
>Here's what I have tried:
>
>Myfunction[f_] :=
>	f[1]
>
>Doesn't work. Any suggestions??


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