Question

For example I have 2 variables a and b (actually more than 2 in my real case), can I assign values for them in a way like c(a,b)<-c(0,0), just like the Tuple in Python? Thank you.

Answer 1

There’s no built in way to do it – what you’re looking for is very similar to lists and vectors in R – instead of calling back a, b, and c, you call back a[1], a[2], and a[3]. If it’s important for you to be able to call back this values by separate names, and to be able to assign them from the same line, you can make a simple function:

Assign <- function(Names, Values) {
             for(i in 1:length(Names)){
                  assign(Names[i], Values[i], envir=.GlobalEnv)
             }}

>A <- c("a", "b", "c", "d")
>B <- c(0,4,2,3)
>Assign(A,B)
>c
#[1] 2

I couldn’t figure out a way for the apply family to tackle this one without making it too complicated – maybe someone could help me out.