On May 14, 2011, at 3:30 AM, utkarshsinghal wrote:
Hi all,
I want to define a function such that one of its argument if
passed do one
thing and if not passed do the second thing.
?missing
So basically, I have to check
whether the argument is passed or not inside the function. I am
trying to
use 'exists' function to do this.
f = function(a,b){exists("b")}
f(a=3, b=4)
[1] TRUE
This is working as expected.
But if I do the following:
f(a=3)
[1] TRUE
Can anybody explain why this function is returning TRUE here.
--
Many thanks,
Utkarsh
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