[R] Returning to parent function

[Jeff Newmiller]

Perhaps read ?try
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Sent from my phone. Please excuse my brevity.

On March 16, 2015 3:08:35 PM PDT, Saptarshi Guha <saptarshi.guha at gmail.com> wrote:
>Hello,
>
>I would like a function X to return to the place that called the
>function XParent that called this function X.
>
>Y calls XParent
>Y = function(){
>  XParent()
>  print("hello")
>}
>
>XParent calls X
>
>XParent = function(){
>   X()
>   print("H")
>}
>
>X returns to the point just after the call to XParent. Hence
>print("H") is not called, but instead "hello" is printed.
>
>An example of what i'm going for is this
>
>continueIfTrue <- function(filterExp, grpname, subname,n=1){
>    y <- substitute(filterExp)
>    res <- isn(eval(y, envir=parent.frame()),FALSE)
>    ## if res is FALSE, I would like to return from telemStats
>}
>
>telemStats <- function(a,b){
>    b <- c(10,12)
>    continueIfTrue( {    length(b) >=10 }, "progStats","00")
>    print("Since the above condition failed, I would not like this
>message to be printed")
>}
>
>I looked into callCC and signals but dont think i understood correctly.
>Any hints would be appreciated
>
>Kind Regards
>Saptarshi
>
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