User Defined Attributes

[Rory McGuire]

You can put the attribute on the function.
There are a couple of go libraries that use struct tags in a similar way.
Such as code.google.com/p/gorest
 On 6 Nov 2012 15:15, "Adam D. Ruppe" <destructionator at gmail.com> wrote:

> On Tuesday, 6 November 2012 at 07:55:51 UTC, Walter Bright wrote:
>
>> User Defined Attributes (UDA) are compile time expressions that can be
>> attached to a declaration.
>>
>
> Hmmm, it didn't work on the most important place for my use case, function
> parameters:
>
> void a(["test"] int foo) {
>     pragma(msg, __traits(getAttributes, foo));
> }
>
> test.d(1): Error: basic type expected, not [
> test.d(1): Error: found 'int' when expecting ')'
> test.d(1): Error: semicolon expected following function declaration
> test.d(1): Error: no identifier for declarator foo
> test.d(1): Error: semicolon expected, not ')'
> test.d(1): Error: Declaration expected, not ')'
>
>
>
> The reason why this is important to me is I have a nice automatic form
> builder given a function signature. I'd like to add things like hints about
> the params that my existing code can take a look at.
>
>
> (a problem that might remain is being able to reference the parameters
> outside... I use a ParameterTypeTuple and .stringof right now but that
> probably won't work for getAttributes. But we can always solve that later.)
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puremagic.com/pipermail/digitalmars-d-announce/attachments/20121106/f6f25717/attachment-0001.html>