Recall

0th

Percentile

Recursive Calling

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.

Keywords
programming
Usage
Recall(…)
Arguments

all the arguments to be passed.

Note

Recall will not work correctly when passed as a function argument, e.g.to the apply family of functions.

See Also

do.call and call.

local for another way to write anonymous recursive functions.

Aliases
  • Recall
Examples
library(base) # 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 # }
Documentation reproduced from package base, version 3.4.3, License: Part of R 3.4.3

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