CODEWITHSUNDEEP
rfunction
NelsonGon
NelsonGon

Reputation: 13309

Extracting results of a function

I've looked here but couldn't solve my problem: Extract the results of a function

Let's say we have this dummy function that returns what a user wrote, how can I extract what is inside this function. I draw inspiration from such functions as say those used in machine learning algorithms. For instance this kind of function:

z<-train(.........)#just an example

From the above I can extract several results e.g, z$finalmodel #an example and so on. How is this done? Here is my example function:

dummy_fun<-function(x,y){
  y<-deparse(substitute(y))
  x<-deparse(substitute(x))
  z<-data.frame(X=x,Y=y)
  q<-print(paste0("You wrote ",x," and ", y))

}
res<-dummy_fun(Hi,There)

The dummy_fun contains objects z and q, how can I extract them? Thanks a lot!

Upvotes: 1

Views: 184

Answers (1)

abhiieor
abhiieor

Reputation: 3554

Simpler function could be (without deparse(substitute()):

dummy_fun<-function(x,y){
  z<-data.frame(X=x,Y=y)
  q<-paste0("You wrote ",x," and ", y)
  return(list(z = z, q = q))
 }

which when called with arguments:

> dummy_fun(x = 1, y = 2)
$z
  X Y
1 1 2

$q
[1] "You wrote 1 and 2"

Upvotes: 5

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