circular dependency is a relation between two or more modules which either directly or indirectly depend on each other to function properly.
Questions tagged [circular-dependency]
1693 questions
18
votes
1 answer
Python mutually dependent classes (circular dependencies)
I've searched a lot, but what I find is mainly examples of recursive programming in python. So here goes the question:
How can I achieve this?
class A:
b = B()
class B:
a = A()
francescortiz
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- 4
- 13
17
votes
3 answers
Static Circular Dependency in Java
for the following code:
class A
{
public static int X;
static { X = B.Y + 1;}
}
public class B
{
public static int Y = A.X + 1;
static {}
public static void main(String[] args) {
System.out.println("X = "+A.X+", Y =…
topgun_ivard
- 8,376
- 10
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17
votes
4 answers
FastAPI / Pydantic circular references in separate files
I would love to use a schema that looks something like the following in FastAPI:
from __future__ import annotations
from typing import List
from pydantic import BaseModel
class Project(BaseModel):
members: List[User]
class User(BaseModel):
…
Nils Ziehn
- 4,118
- 6
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- 40
17
votes
1 answer
SQLAlchemy circular dependency - how to solve it?
I have two tables, News and Files:
# unrelated columns removed
class News(db.Model):
id = db.Column(db.Integer, primary_key=True)
file_id_logo = db.Column(db.Integer, db.ForeignKey('files.id'))
logo = db.relationship('File',…
ThiefMaster
- 310,957
- 84
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- 636
17
votes
1 answer
How does browserify handle circular dependencies?
I'm considering moving a large browser-based code base over to CommonJS (it's an AngularJS 1.x application written in TypeScript). The application has circular dependencies, so I think RequireJS is out of the question.
How does Browserify handle…
Eric
- 5,842
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17
votes
2 answers
How does compiling circular dependencies work?
I've made the example in Java but I think (not tested) that it works in other (all?) languages.
You have 2 files. First, M.java:
public class MType {
XType x;
MType() {x = null;}
}
Second, another file (in the same directory),…
Fabio Filippi
- 1,732
- 25
- 40
17
votes
3 answers
In C#, how to find chain of circular dependency?
This error usually occurs when one deployment project contains the project outputs of a second deployment project, and the second project contains the outputs of the first project.
I have a method that check circular dependency. In input, we have a…
Anatoly
- 1,908
- 4
- 25
- 47
17
votes
3 answers
Injecting $http into angular factory($exceptionHandler) results in a Circular dependency
When I try inject $http into an overridden factory I get the error:
Uncaught Error: [$injector:cdep] Circular dependency found: $http <-
$exceptionHandler <- $rootScope
AngularModule.factory('$exceptionHandler', function ($http) {
any ideas…
FutuToad
- 2,750
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16
votes
2 answers
Nestjs Circular dependency forwardRef() drawbacks
Official Circular dependency says:
A circular dependency occurs when two classes depend on each other. For example, class A needs class B, and class B also needs class A. Circular dependencies can arise in Nest between modules and between…
Jasurbek Nabijonov
- 1,607
- 3
- 24
- 37
16
votes
2 answers
Webpack ES6 modules circular dependencies when using index files
I have a big project, I try to refactor to ES6 modules right now.
To make further development easier, I wanted to introduce index files, which just export all modules within the directory:
index.js:
export { default as ModuleA } from…
tjwelde
- 353
- 1
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- 9
16
votes
3 answers
How to avoid circular dependency caused by type hinting of pointer attributes in python
Consider the two modules (in the same folder):
firstly, person.py
from typing import List
from .pet import Pet
class Person:
def __init__(self, name: str):
self.name = name
self.pets: List[Pet] = []
def…
levraininjaneer
- 1,157
- 2
- 18
- 38
16
votes
2 answers
Is everything after an exporting namespace not exported?
I was reading about modules, and I wished to do something like this:
a.cpp
module foo.a;
export namespace foo {
struct A {
void doA();
};
}
import foo.b;
void foo::A::doA() {
B{}.doB();
}
b.cpp
module foo.b;
export namespace…
Guillaume Racicot
- 39,621
- 9
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- 141
16
votes
10 answers
circular dependencies between dlls with visual studio
I have a circular dependency between two functions. I would like each of these functions to reside in its own dll. Is it possible to build this with visual studio?
foo(int i)
{
if (i > 0)
bar(i -i);
}
-> should compile into foo.dll
bar(int…
Kris Steegmans
- 161
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16
votes
5 answers
Is it possible to enable circular dependencies in Visual Studio at the assembly level? Would mutually dependent assemblies even be possible?
This probably sounds like a stupid question, but I'm going to give it a shot anyway.
So in Visual Studio, you can't have two projects X and Y such that X references Y and Y references X.
In general, I can totally understand how having a circular…
Dan Tao
- 125,917
- 54
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- 447
16
votes
3 answers
Exception to the Rule of Three?
I've read a lot about the C++ Rule of Three. Many people swear by it. But when the rule is stated, it almost always includes a word like "usually," "likely," or "probably," indicating that there are exceptions. I haven't seen much discussion of what…
Sam Kauffman
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