Does D have class' attributes like C#'s?

[Marc]

On Saturday, 16 December 2017 at 20:05:15 UTC, Anonymouse wrote:
> On Saturday, 16 December 2017 at 19:57:30 UTC, Marc wrote:
>> C# has a quite nice way to store metadata about a property by 
>> a feature called atributes[1]. For example, I can write 
>> something like this:
>>
>>> class A {
>>>    [TextSize(256)]
>>>    string Name { get; set; }
>>> }
>>
>> So using runtime/reflection I can retrieve the TextSize value 
>> associated to A.name property.
>>
>> Does D have something similar?
>
> UDAs? User Defined Attributes.
>
> https://dlang.org/spec/attribute.html#UserDefinedAttribute
> http://ddili.org/ders/d.en/uda.html
>
> class A {
>     @TextSize(256)
>     string name() { /* ... */ }
> }

I can't "pack" an object, right? In C#, TextSize is a class and 
256 is constructor's first argument. In D it's pretty much an 
array but I guess it's close enough. Thanks!