Re: [Vala] Minor features request (about structs and enums)

[Frederik <scumm_fredo gmx net>]

Wolter Hellmund wrote:
> > I don't see the benefit of these forms versus
> >
> > struct Object {
> >      int id;
> >      float mass;
> > }
> >
> > respectively
> >
> > enum Process {
> >      CONSTRUCT,
> >      RUN,
> >      DESTROY
> > }
> >
> > or did you miss that these are available?
>
> Oh, I totally missed that! I thought those were typedef kind of
> declarations,

They are type definitions. I don't think this is what you meant.

  struct MyStruct {
      // ...
  }

  ...
  MyStruct my_struct = ...


I think you wanted to define a variable of an anonymous struct/enum type
(i.e. without naming the type). This is possible with C and C++ but not
with Vala, Java and C#.


> Now, as to reply Frederick:
>
> Well, I think that 
>
> foreach (MyEnum item in MyEnum.values) { ... }
>
> would tell the system that item is an enum itself, and to look for
> instances of it in MyEnum (thus to look for enums in an enum), am I
> wrong? If not, then I'll consider filing a bug with the following
> structure
>
> foreach (MyEnum.Item item in MyEnum) { ... }

The type of an enum value (item) is the enum type itself:

enum MyEnum {
    A,
    B
}

...
MyEnum item = MyEnum.A;

> Frederick: Also, good to have you back from Germany (someone tole me you
> were away) I am going to show you how my SDL thing turned out later.

You can send me an email.


Best regards,

Frederik