std.typecons.RefCounted!T core.memory.GC.disable();
Wow. That was easy. I see, D's claim of being a multi-paradigm language is not false.
Phobos does rely on the GC to some extent. Most algorithms and ranges do not though.
Running (library) code that was written with GC in mind and turning GC off doesn't sound ideal.
But maybe this allows me to familiarise myself more with D. Who knows, maybe I can learn to stop worrying and love garbage collection.
Thanks for your help!
