Services & Resources / Wolfram Forums / MathGroup Archive
-----

MathGroup Archive 2012

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

Search the Archive

Re: set option flag in function definition

  • To: mathgroup at smc.vnet.net
  • Subject: [mg128152] Re: set option flag in function definition
  • From: Alexei Boulbitch <Alexei.Boulbitch at iee.lu>
  • Date: Wed, 19 Sep 2012 04:57:38 -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

Dear Experts,

I had one question regarding to the function definition.

I want to have a function that executes certain operation when I chose the
corresponding option flag.

For example,

a function called "f"

when I call it like f[arg1,arg2,arg3, optionX]
it executes command
arg1/arg2+arg3

If I call it like f[arg1,arg2,arg3,optionY]
it executes command
arg1*arg2-arg3

If I call it like f[arg1,arg2,arg3,optionSomethingElse]
it returns me
"No appropriate option flag was found. Please indicate correct options"

This looks a bit like scripts running in UNIX. I am wondering if I can do
the same in Mathematica easily?

Thank you so much for your kind help!


The trivial solution would be to use If operator or a Piecewise function. For example:

f[arg1_,arg2_,arg3_, option_]:=If[option==optionX, arg1/arg2+arg3,
             If[option==optionY, arg1*arg2-arg3, Print["No
appropriate option flag was found. Please indicate correct options"]
]
]

Is it unacceptable for whatever reason?

Have fun. Alexei

Alexei BOULBITCH, Dr., habil.
IEE S.A.
ZAE Weiergewan,
11, rue Edmond Reuter,
L-5326 Contern, LUXEMBOURG

Office phone :  +352-2454-2566
Office fax:       +352-2454-3566
mobile phone:  +49 151 52 40 66 44

e-mail: alexei.boulbitch at iee.lu






  • Prev by Date: while loop through a list
  • Next by Date: Weighting in simultaneous NonlinearModelFits
  • Previous by thread: Re: set option flag in function definition
  • Next by thread: Re: Kernel exits (for lack of memory)