Does D have too many features?

[Andrej Mitrovic]

On 4/29/12, Alex Rønne Petersen <xtzgzorex at gmail.com> wrote:
> I hate to nitpick and all that, but opBinaryRight!"in" actually works
> now. ;)

Yes and then you get to have those nice template instantiation errors,
which make no sense at all:

struct Foo {
    auto opIn_r(string op)(int i) { return 1; }
}

struct Bar {
    auto opBinaryRight(string op)(int i) { return 1; }
}

void main()
{
    Foo foo;
    auto x = "" in foo;

    Bar bar;
    auto y = "" in bar;
}

Foo:
test.d(34): Error: template test.Foo.opIn_r does not match any
function template declaration
test.d(16): Error: template test.Foo.opIn_r(string op) cannot deduce
template function from argument types !()(string)

Bar:
test.d(37): Error: rvalue of in expression must be an associative array, not Bar

The Bar error message is completely useless.