On 29.08.2013 01:28, captaindet wrote:
a recent discussion (
http://forum.dlang.org/thread/kvje4r$1tff$1...@digitalmars.com ) about the
official enum dox ( http://dlang.org/enum.html ) was not conclusive whether
enum IDENTIFIER;
is officially allowed/supported. jacob pointed out that it has an
important use case in that it can serve as UDA. as UDAs are fairly new,
this cannot be the reason why this syntax was allowed in the first place
though, *if* it is allowed. also, it might be used in meta stuff similar
to "#define IDENTIFIER" in C - playing with this idea i run into this
issue...
enum IDENTIFIER;
was used to help resolving forward references to type IDENTIFIER when
the resolving of forward references was a lot less capable than it is
now. I don't think it is still needed for that. The same syntax exists
for struct or class.
Please also note that using it as in C/C++ to declare a type that is
actually defined in another module does not work. The type is bound to
the current module and the definition has to be in that module.
