You have circular dependent imports. physics.py is imported from entity before class Ent is defined and physics tries to import entity that is already initializing. Remove the dependency to physics from entity module.
Seems like you shouldn’t need to include anything in any of the files. A forward declaration of the relevant types should be sufficient: #ifndef MapTest_vertex_h #define MapTest_vertex_h struct edgelist; typedef struct { char* name; float x, y; edgelist* edges; // C++ only – not C } vertex; #endif etc. In C coding, you have to … Read more
You can workaround circular dependencies by injecting Injector instead of one of the services that cause the circular dependency private payrollService:PayrollService; constructor(/*private payrollService:PayrollService*/ injector:Injector) { setTimeout(() => this.payrollService = injector.get(PayrollService)); }
In most cases when I’ve had to have two things reference each other, I’ve created an interface to remove the circular reference. For example: BEFORE public class Foo { Bar myBar; } public class Bar { Foo myFoo; } Dependency graph: Foo Bar ^ ^ | | Bar Foo Foo depends on Bar, but Bar … Read more
Is this kind of cross-inclusions are prohibited? Yes. A work-around would be to say that the ifr member of mainw is a reference or a pointer, so that a forward-declaration will do instead of including the full declaration, like: //#include “IFr.h” //not this class IFr; //this instead … class mainw { public: static IFr* ifr; … Read more
The constructor of your class A calls the constructor of class B. The constructor of class B calls the constructor of class A. You have an infinite recursion call, that’s why you end up having a StackOverflowError. Java supports having circular dependencies between classes, the problem here is only related to constructors calling each others. … Read more
The answer lies in the difference between declaration and definition. You are attempting to declare and define in the same step (in the case of a new type via typedef). You need to break these up into different steps so the compiler knows what you are talking about in advance. typedef struct Person Person; typedef … Read more
I think the answer by jpmc26, while by no means wrong, comes down too heavily on circular imports. They can work just fine, if you set them up correctly. The easiest way to do so is to use import my_module syntax, rather than from my_module import some_object. The former will almost always work, even if … Read more
If you do import foo (inside bar.py) and import bar (inside foo.py), it will work fine. By the time anything actually runs, both modules will be fully loaded and will have references to each other. The problem is when instead you do from foo import abc (inside bar.py) and from bar import xyz (inside foo.py). … Read more
Great question! No, Both forms will be (can be) GC’d because the GC does not directly look for references in other references. It only looks for what are called “Root” references … This includes reference variables on the stack, (Variable is on the stack, actual object is of course on the heap), references variables in … Read more