assert() vs. enforce(), invariant() vs. ... ?

[Namespace]

> Typedef was useful not for poking around new type with same 
> properties - new name of existing type, but for non-trivial 
> default value:
>
> typedef int myint = 1;
>
> void main()
> {
> 	myint my;
> 	assert(my is 1);
> }
>
> Alias does not provide this feature, so D hadn't become better 
> with this depreciation (actually the opposite). Nor it had with 
> delete operator depreciation for the replacement of destroy, 
> which like in case with typedef, does not cover full old 
> feature functionality (and functionality what destroy() does 
> provide is useless in many cases). I consider both 
> depreciations as mistakes.

Thanks for explanation. I agree that the deprecation of typedef 
and delete is/was a mistake, and IMO the deprecation of scope and 
the library fix scoped is the same mistake.