DIP23 draft: Fixing properties redux

[kenji hara]

2013/2/4 Andrei Alexandrescu <SeeWebsiteForEmail at erdani.org>

> On 2/3/13 3:16 AM, Andrei Alexandrescu wrote:
> [snip]
>
> Some more thinking got me to three simple principles that guide the
> proposed property design:
>
> http://wiki.dlang.org/DIP23#**In_a_nutshell<http://wiki.dlang.org/DIP23#In_a_nutshell>


> 2. A @property may have EXACTLY ONE or EXACTLY TWO parameters, counting
the implicit this parameter if at all. The ONE-parameter version is ALWAYS
a getter, and the TWO-parameter version is ALWAYS a setter. There's no
variadics, defaulted parameters, and such.

Unfortunately, I can present a counterexample.

struct S {
    static int value;
    static @property int foo() { return value; }
    static @property void foo(int n) { value = n; }

}
void main() {
    int n = S.foo;
    S.foo = 1;
}

Should they be disallowed, as like module level properties?

Kenji Hara
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