I was surprised that the compiler cannot compile

class A { B b; }
class B { C c; }
class C { D d; }
class D { A a; }

. Shouldn't it?

On Sunday, 17 March 2024 at 20:38:16 UTC, Per Nordlöw wrote:

class A { B b; }
class B { C c; }
class C { D d; }
class D { A a; }

Ahh, nevermind. I defined these inside a unittest scope so that's why it failed. Defining them at module scope works just fine.