Suppose that I have an "out" parameter in a function:
int foo(in int i, out int j)
{
j = /* something */;
return /* whatever */;
}
Is there any way to mark that out parameter as optional, i.e. so that it only
gets written to/used if a corresponding parameter is passed to the function?
The goal would be to be able to write e.g.
int i, j;
foo(i); // no need to worry about j
foo(i, j); // this time j gets written to
It would be easy to write a wrapper function,
int foo(in int i)
{
int j;
return foo(i, j);
}
... but I'm wondering if there is a way to make the out parameter optional
without doing this.
The use-case I'm thinking of is e.g. for a reporting variable that can be used
to track some kind of function behaviour, but which one doesn't necessarily
always want to bother measuring.
