Inheritance of purity

[Jason House]

On Thursday, 23 February 2012 at 17:10:58 UTC, Bruno Medeiros 
wrote:
> Sounds like a good idea.
> I would even add to this that it might be useful to have 
> similar syntax that would allow to define an override method 
> without having to specify the return type nor the parameters of 
> the overridden method. Sometimes in class hierarchies there is 
> a lot of redundancy when overriding methods and it could be a 
> nice small feature to reduce that (especially for methods with 
> lots of parameters).
>
> class Foo {
> 	int num;
> 	
> 	override opEquals {
> 		if(cast(Foo) o is null)
> 			return false;
> 		return this.num == (cast(Foo) o).num;
> 	}
> 	
> 	override toString {
> 		return to!(string)(num);
> 	}
> 	
> }

I don't like omitting argument names, but removing argument types 
seems nice.