Am Sat, 27 Sep 2014 19:19:28 +0530
schrieb d coder via Digitalmars-d
<[email protected]>:
> DMD wont compile this. I get an error saying:
> /tmp/test.d(3): Error: need 'this' for 'foo' of type 'int'
> Failed: ["dmd", "-v", "-o-", "/tmp/test.d", "-I/tmp"]
>
> Is this a bug or is it illegal code?
>
> // Regards
> // Cherry
>
> class Foo {
> int foo = 42;
> @foo int bar;
> this(int frop) {
> foo = frop;
> }
> int getFooAttr() {
> auto ffff = __traits(getAttributes, this.tupleof[1]);
> return ffff[0];
> }
> }
>
> void main() {
> Foo f = new Foo(43);
> f.getFooAttr();
> }
That's incorrect code. UDAs are attached to the item (the ctor
in this case) at compile time and foo is neither compile time
nor static, it is a class instance field. You would need to
use @"foo" and in getFooAttr() go through the getMember trait.
--
Marco
