R help - Jul 2014 - R function returning a list of variable(s) conditional on the value of an option?

Dear all,

I have an R function which returns a list of variables; however, within the
body of the function I would like to incorporate a branch based on a user
selected option that will mean there will be one different variable to
return based on the option value.

I was thinking of doing something like this (only an example):

foo <- function(x, y, option = TRUE)
{
	.
	If (option == TRUE) {
		z = z
	} else {
		w = w
}
	return(list(x = x, y = y, z = ifelse(option == TRUE, z, NA), w ifelse(option !=
TRUE, w, NA))
	
}

However, I was wondering if anyone else had a better idea/method which might
be more elegant?

Many thanks,
Luke



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