Recall is used as a placeholder for the name of the function in which it is called. It allows the definition of recursive functions which still work after being renamed, see example below.
Recall(…)| Parameter | Description |
|---|---|
… |
all the arguments to be passed. |
# NOT RUN {
## A trivial (but inefficient!) example:
fib <- function(n)
if(n<=2) { if(n>=0) 1 else 0 } else Recall(n-1) + Recall(n-2)
fibonacci <- fib; rm(fib)
## renaming wouldn't work without Recall
fibonacci(10) # 55
# }