The `6` is the code, I just put the first thing that came to my mind there :D
In my example, if you replace it with a more sophisticated code block, R will evaluate it and print out the result of the evaluation.
Typically, you'd want to parse the unevaluated code, though:
> `if` = function(a, b) { print(substitute(a)); print(substitute(b)) }
> if (foo) { print("bar") }
foo
{
print("bar")
}
It overwrites `if`, in the current scope, of course.
Can you also put code into { 6 }, like { print(6) }?
Does this overwrite R's if or how does the scoping in R work?