Nick Sabalausky wrote:
"Nick Sabalausky" <a...@a.a> wrote in message
news:gsbru0$rb...@digitalmars.com...
"Don" <nos...@nospam.com> wrote in message
news:gsbovk$nb...@digitalmars.com...
The problem is a lack of notification at compile time. Runtime exceptions
are the problem, not the solution.
By the way, if the opDot is a template (per Andrei's suggestion), then if
it is marked as nothrow, you have a guarantee that if it compiles, it's
valid.
nothrow opDot(char [])(args...) doesn't have any of the problems which
Nick et. al have mentioned.
Ok, now *that* is something I can be happy with.
In fact, now that I think about it, as long as the member name was required
to be a template parameter, I'd be perfectly happy with it (and wouldn't
even want nothrow to be required).
I think that's slightly different from what Andrei's advocated though.
Unless I misread something, Andrei, you want it to be possible for the
member name to be *either* a template or non-template param, right?
I think there's a confusion somewhere. Are you sure you know what you
don't like? :o)
It's simple, really. First off, there's no way you can pass a variable
string as a method name with a regular syntax:
string foo = "bar"';
Dynamic d;
d.foo(); // passes "foo", not "bar"
I hope this clarifies that confusion.
If you want to invoke a method known as a string variable, opDot or
whatever has nothing to do with it. You don't need any change to the
language at all, because you'd write:
string foo = "bar";
d.call(foo); // call method bar
What opDot does is to allow the regular member syntax while still
allowing the callee to look up the name statically or dynamically
(assuming the method name is passed into opDot as a template parameter).
Note, again, that opDot has everything to do with the syntax and next
to nothing to do with the semantics, which is realizable without any
change in the language. And that's how the cookie crumbles. I understand
you don't like that, but at least we should be clear on where the
feature starts and where it ends.
Andrei
