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)
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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,
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