Interfaces

Interfaces are introduced thru the interface keyword:

interface IFoo: pass

Interface methods don't need to have a body:

interface IUnknown: def QueryInterface(id as System.Guid) as object

But if they do it must be empty:

interface IFoodMachine: def Spam(): pass

If a method in a interface does not declare a return type it is assumed to be void since there's no body with a return statement where to infer the type from. Thus the above interface declaration is equivalent to the following one:

interface IFoodMachine: def Spam() as void

Interfaces can extend other interfaces:

interface ImALumberjackAndImOk: def SleepAllNight() def WorkAllDay()

interface IWishIdBeenAGirlie(ImALumberjackAndImOk): def JustLikeMyDearPappa()

Interfaces can be partial:

partial interface I: def Foo()

partial interface I: def Bar()

for member in typeof(I).GetMembers(): print member.Name