On Sunday, 22 April 2018 at 01:26:09 UTC, Uknown wrote:
Its a special case for classes. Makes them usable without the GC.
The intention was actually just to have deterministic destruction - a scope class ctor runs at the end of scope (and it used to be you could force a class to always be scope too). The stack allocation is simply an optimization enabled by the scope lifetime. That optimization can apply elsewhere too.
