User Defined Attributes

[Adam D. Ruppe]

On Tuesday, 6 November 2012 at 17:16:34 UTC, Adam D. Ruppe wrote:
>   [ExternalName("log-in")] /* we can do this now */
>     void logIn([ExternalName("user-id")] string userId)


BTW we could conceivably do:

[ExternalName("log-in"),
ParameterAttribute!("userId")(ExternalName("user-id")]
    void logIn(string userId) {}


Where the ParameterAttribute simply matches up the param by name 
or by position (if you pass an int instead of string) and puts 
the other argument in that map.

When you scan the function for attributes, you keep your eye open 
for that ParameterAttribute thingy and match it up in the library.


So if it is too painful to put it in the compiler, we could make 
it work in the library.