Re: 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.