[R] select one function from two of them in another function

[jim holtman]

Is this what you want -- this returns a function that you can then call:

> test1 <- function() 1
> test2 <- function() 2
> test3 <- function(func='test1'){  # return the function to call
+     if (func == 'test1') return(test1)
+     return(test2)
+ }
>
> # test it
> test3()()  # default -- notice the second set of parens
[1] 1
>
> test3('test1')()
[1] 1
>
> test3('test2')()
[1] 2
>
>
>


On Thu, Aug 27, 2009 at 4:41 PM, SH.Chou<cls3415 at gmail.com> wrote:
> Hi all,      I have two functions called test1() and test2(). Now how do I
> select one of them in test3()??
>
> Say
>  test3<-function(func="test1"){
>        if (func=="test1"){
>               now.func<-test1()
>       }
>       else now.func<-test2()
>  }
>
> I know this function I wrote does not right. Do anyone can tell me how to do
> that for real?
>
> Thanks a million
>
> S.H.
>
> --
> =====================================
> Shih-Hsiung, Chou
> Department of Industrial Manufacturing
> and Systems Engineering
> Kansas State University
>
>
>
> --
> =====================================
> Shih-Hsiung, Chou
> Department of Industrial Manufacturing
> and Systems Engineering
> Kansas State University
>
>        [[alternative HTML version deleted]]
>
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>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?