[elcomet]

what if you have to deal with two persons?

[singularity2001]

In that case you could have the signature

func call(person#1 person#2){}

[ajuc]

Wouldn't it be better if we could give meaningful names instead of 1 and 2?

    function call(person#sender person#receiver)

And at that point we're back to the square one, just remove the # :)