[R] Passing lists between functions

[jim holtman]

Just reference the objects in the list:

do_something<-function(L){

lst$a+lst$b+lst$df+lst$g
}
do_something(lst)


On Sun, Nov 25, 2012 at 8:24 PM, Ally <a.rushworth at stats.gla.ac.uk> wrote:
> I'd like to pass a list object created by one function as an argument of
> another function.  once inside the second function, I'd like to break the
> list up to it's individual elements, each then identifiable by the 'names'
> of the list.
>
> The list looks something like
>
> lst<-list(a=1, b=2, df=5, g=7)
>
> then inside the function I've been writing a sequence of statements that
> extract the objects within lst like
>
> do_something<-function(L){
> a<-lst$a
> b<-lst$b
> df<-lst$df
> g<-lst$g
> a+b+df+g
> }
> do_something(lst)
>
> My question is, is it possible to avoid the above sequence of statements,
> and achieve the same thing with a single line of code?  Perhaps this would
> be bad programming practise, as you can't 'see' where objects in the
> function are coming from?
>
> Thanks,
>
>  alastair
>
>
>
>
>
>
>
> --
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> Sent from the R help mailing list archive at Nabble.com.
>
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-- 
Jim Holtman
Data Munger Guru

What is the problem that you are trying to solve?
Tell me what you want to do, not how you want to do it.