I guess D doesn't support named UDA's directly?

e.g.,

@(Name = "My Name", Other = .34)

It would be nice to have the ability to have an "attribute" hierarchy where looking up attributes on objects could easily be done.

e.g.,

@(Name = "s", Other = 2) struct s
{
    @(Name = "q", Default_Value = 4) int q = 4;
}

which would form a hierarchy

Attributes[]...[]

Which @[s].Attributes = {"Name" = "s", "Other" = 2} (Key/Value pairs)

@[s][q].Attributes = {"Name" = "q", "Other" = 2, "Default_Value" = 4 }

(attributes are inherited

Querying at runtime would be a binary search or O(1) if the object type is known.

Anyways, Just an idea I had when trying to make attributes more useful.

On Thursday, 1 August 2013 at 11:02:00 UTC, JS wrote:
> Anyways, Just an idea I had when trying to make attributes more useful.

struct Name
{
    string data;
}

@Name("hello")
void foo();

I favor this approach much more because of strong typing.