On 2012-07-27 12:29, Namespace wrote:
1.
Why are these two method header identitcal?
const Foo some_function() {
and
Foo some_function() const {
?
The reason "const Foo some_function" is allowed is because in D this
syntax is possible:
class Foo
{
const:
Foo some_function () {}
}
IMO that isn't consistent. IMO only the last is valid.
With this example, it is somewhat understandable.
// C++
class Bar {
const Foo getFooObj() const { ... }
const Foo& getFooObjRef const { ... }
};
// D
class Bar {
const(Foo) getFooObj() const { ... }
ref Foo getObjRef() { ... }
}
const(Foo) but ref Foo. This is inconsistency, if you ask me.
So why is between C++ and D such a huge difference?
Why isn't it simply const Foo instead of const(Foo)?
I think the reason is the same as above. If the return value is const
you need to use parentheses. I think that the syntax would conflict with
the const-method syntax otherwise.
The reason for why const is allowed after the paramter list is because
it can be a bit confusing to have two const next to each other.
class Foo
{
const const (Foo) foo () {}
}
--
/Jacob Carlborg
