Am 06.11.2012 16:18, schrieb Walter Bright:> On 11/6/2012 6:30 AM,
dennis luehring wrote:
> > Am 06.11.2012 14:14, schrieb Adam D. Ruppe:
> >> 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));
> >> }
> >
> > sad - but its still very young feature :)
> >
> > im using something like an description on my methods to describe
parameter
> > "features" for an resource manager - something like "read",
"write", "copy",
> > "read_write" etc.
> But there's already out=write, read=all of them, read_write=ref,
copy=not a ref
> or an out.
and now expand that to an higher level manager that use such information
for implementing(generating) runtime loading and locking strategies in a
tree/graph based environment - based on the parameters needs ... i've
got something like that in C++ using its own interface description
language and an generator
>
> I don't know what use UDAs would be for parameters.
>
exact the same as for every other symbol - it enriches the semantic
meaning of that symbol :)
