[R] How to execute a funcition which name is stored in a string?

[Henrik Bengtsson]

?do.call

/H

On Sun, Nov 1, 2009 at 10:58 PM, Charlie Sharpsteen
<chuck at sharpsteen.net> wrote:
> On Sun, Nov 1, 2009 at 8:07 PM, Ning Ma <pningma at gmail.com> wrote:
>>
>> Hi, everybody
>>
>> Is there any way to execute a function, which name is stored in a string.
>> such as:
>> a <- "ls()"
>> foo(a) ## same as ls() itself.
>
> One way to accomplish this by using get() to search for a function
> that matches your string. You can assign the return value of get() to
> a variable which may be used like the original function object:
> a <- 'ls'
> foo <- get( a, mode = 'function' )
> foo()
> [1] "a"          "foo"
>
>
>
> -Charlie
>
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