About @ and UDA

[Andrea Fontana via Digitalmars-d-learn]

My 2 cents. If I remember correctly, "@" prefix in @safe, 
@trusted, @system, etc was added just to avoid keywords 
pollution, right?

Now UDA uses the same prefix: if some new 
keywords/properties/attributes will be added to D, the same 
problem will come back again... Is it a crazy idea to deprecate @ 
for UDAs in favor of something else like #? In this way @xxx will 
be a language attribute and #xxx will be a user defined 
attribute. No pollution, no clashes.

Maybe it's not too late to do this change. I think it will be not 
a big effort to replace uda syntax in existing projects (a 
deprecation warning will help).


Andrea