[R-sig-teaching] count the number of argument of a functionr

[Bob]

> 
> Dear All:
> 
> I am wondering whether there is a way to read and assign the number of
> arguments of a function inside this function.
> 
> 
> ### For example
> 
> fun<-function(x1,x2,x3,...){
> 
> m<- number of arguments
> 
> }
> 
> ### e.g.
> 
> fun<-function(x1,x2,x3){
> 
> m<- number of arguments
> 
> ### m =3 in this case
> 
> }
> 
> ### e.g.
> 
> fun<-function(x1,x2,x3,y1,z1,z2){
> 
> m<- number of arguments
> 
> ### m =6 in this case
> 
> }
> 
> 
> 
> 
> with thanks
> Steve
> 
> -- 
> Steven M. Stoline
> 1123 Forest Avenue
> Portland, ME 04112
> sstoline at gmail.com
> 
> 	[[alternative HTML version deleted]]
> 
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> 
> 


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