R help - Aug 2005 - Putting all elementes of the list in an enviorment of a function

Hello!

I have two functions.

The first one prepares the arguments for the second one. What is the best 
way to put all resoults of the first one into the second one? I tried 
attach, however the object in the "main" enviorment have a priority
over the
ones in list. An example is at the end.

Thanks in advance for any suggestions!
Ales Ziberna

For example - I would like to use just "a" instead of
"list$a" in fuction
"second"

first<-function(a,b){
    if(length(a)!=1) a <- a[1]
    if(length(b)!=1) b <- b[1]
    list(a=a,b=b)
}

second<-function(list,c){
    list$a + list$b + c
}

a<-c(2,3)
b<-4:64
c<-5

res<-first(a,b)
second(res,c)

?with will help you.

I would avoid using 'list' as a function name, as it will confuse people
and might confuse R too.

On Tue, 2 Aug 2005, [iso-8859-2] Alea }iberna wrote:
> Hello!
>
> I have two functions.
>
> The first one prepares the arguments for the second one. What is the best
> way to put all resoults of the first one into the second one? I tried
> attach, however the object in the "main" enviorment have a
priority over the
> ones in list. An example is at the end.
>
> Thanks in advance for any suggestions!
> Ales Ziberna
>
> For example - I would like to use just "a" instead of
"list$a" in fuction
> "second"
>
> first<-function(a,b){
>    if(length(a)!=1) a <- a[1]
>    if(length(b)!=1) b <- b[1]
>    list(a=a,b=b)
> }
>
> second<-function(list,c){
>    list$a + list$b + c
> }
>
> a<-c(2,3)
> b<-4:64
> c<-5
>
> res<-first(a,b)
> second(res,c)
-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595