trm_return: Flag a return value

In trampoline: Make Functions that Can Recurse Infinitely

Description

Wrap a return value in your recursive function with trm_return() to have it passed along and returned by your final recursion.

Usage

trm_return(x)

Arguments

x	A value to be returned at the end of all recursions

Value

x with added class attribute 'trampoline_return'

Examples

trampoline(factorial(13),
           factorial = function(n) {
             if(n <= 1) {
               return(trm_return(1))
             }
             val <- yield(factorial(n - 1))
             return(val * n)
           })

trampoline documentation built on Jan. 5, 2022, 1:07 a.m.