Cyclic Dependency occurs when objects form an infinite recurring dependency graph. The head points to the tail and the tail points to the head.
Questions tagged [cyclic-dependency]
123 questions
49
votes
4 answers
How to resolve cyclic dependency in Maven?
How can we resolve a Maven cyclic dependency?
Suppose A is the parent project and B and C are child projects. If B is dependent on C and C is dependent on B, is there any way to resolve the cyclic dependency other than having a different project.
user2367460
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- 3
39
votes
3 answers
Cyclic module dependencies and relative imports in Python
Suppose we have two modules with cyclic dependencies:
# a.py
import b
def f(): return b.y
x = 42
# b.py
import a
def g(): return a.x
y = 43
The two modules are in the directory pkg with an empty __init__.py. Importing pkg.a or pkg.b works fine,…
Sven Marnach
- 574,206
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28
votes
1 answer
How can I use my specs for their intended purposes if they are in a separate namespace?
One of the examples in the clojure.spec Guide is a simple option-parsing spec:
(require '[clojure.spec :as s])
(s/def ::config
(s/* (s/cat :prop string?
:val (s/alt :s string? :b boolean?))))
(s/conform ::config ["-server" "foo"…
Sam Estep
- 12,974
- 2
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- 75
24
votes
2 answers
Registering packages in Go without cyclic dependency
I have a central package that provides several interfaces that other packages are dependent on (let us call one Client). Those other packages, provide several implementations of those first interfaces (UDPClient, TCPClient). I instantiate a Client…
Matt Joiner
- 112,946
- 110
- 377
- 526
19
votes
3 answers
Why is Java prohibiting inheritance of inner interfaces?
I.e. why is the following "cyclic dependency" not possible?
public class Something implements Behavior {
public interface Behavior {
// ...
}
}
Since interfaces don't reference the outer class this should be allowed; however, the…
Philip Kamenarsky
- 2,757
- 2
- 24
- 30
14
votes
1 answer
Haskell - resolving cyclical module dependency
Let's say I write the following code:
a game module
module Game where
import Player
import Card
data Game = Game {p1 :: Player,
p2 :: Player,
isP1sTurn :: Bool
turnsLeft :: Int
…
SolventGren
- 145
- 1
- 6
12
votes
1 answer
Cyclic Imports to fix R0401 from pylint
Pylint complains about cyclic import with R0401 error code for a specific file of the NLTK package, e.g.
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import), ] Cyclic import (nltk -> nltk.internals)
nltk/nltk/ccg/lexicon.py:1: [R0401(cyclic-import),…
alvas
- 115,346
- 109
- 446
- 738
9
votes
1 answer
Cyclic load dependency in Clojure
My project has a simple structure as following:
|- core.clj
|- dialogs.clj
|- dialogs/
|- name_dialog.clj
name_dialog has a dependency from core, and core should require name_dialog.
So I have dependencies like this:
core.clj
(ns ddsl.core
…
lich
- 290
- 1
- 5
- 10
9
votes
4 answers
Cyclic dependency between header files
I'm trying to implement a tree-like structure with two classes: Tree and Node. The problem is that from each class I want to call a function of the other class, so simple forward declarations are not enough.
Let's see an example:
Tree.h:
#ifndef…
Jabba
- 19,598
- 6
- 52
- 45
9
votes
4 answers
How to properly handle a circular module dependency in Python?
Trying to find a good and proper pattern to handle a circular module dependency in Python. Usually, the solution is to remove it (through refactoring); however, in this particular case we would really like to have the functionality that requires…
Juan Carlos Coto
- 11,900
- 22
- 62
- 102
8
votes
5 answers
Angular 8: Cannot instantiate cyclic dependency - ActivatedRoute
I am trying to integrate the APP_INITIALIZER from Angular in my project in order to do some functionalities before start the application. The problem comes when I use the ActivatedRoute from Angular in my service.
The error is:
Error: Provider parse…
Jgascona
- 1,201
- 2
- 13
- 25
7
votes
3 answers
Angular Circular dependency when inject TranslateService to interceptor
I have a problem with injecting dependencies into the interceptor. I want to inject TranslateService into HttpErrorInterceptor, but I get a cyclic dependency error. When I remove the TranslateService injection it all works.
I have declared…
lukasbear
- 121
- 1
- 5
7
votes
1 answer
How to detect cyclic dependency imports in react native?
Is there any package or solution to detect cyclic dependency imports in react native?
[Or]
Can I get a stack trace for cyclic imports when running the app?
Currently the cyclic dependent imports are returning undefined values, Without telling the…
Sanyasirao Mopada
- 943
- 12
- 31
7
votes
2 answers
Are clojure function cyclic dependencies specifically disallowed by design, or is it just a reader behaviour?
If I do the following in clojure
(defn sub1a [a]
(cond
(= a 0) 0
true (sub1b (- a 1) )))
(defn sub1b [a]
(cond
(= a 0) 0
true (sub1a (- a 1) )))
(println (sub1a 10))
I get the following error:
java.lang.Exception: Unable to…
hawkeye
- 34,745
- 30
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- 304
6
votes
1 answer
Resolve circular dependency in gradle
I recently started developing a java project which has some sub projects within it. All of them are gradle. So let's say there are two projects A and B which is already implemented. And I'm going to introduce another graldle project C. And the…
Shehan Dhaleesha
- 627
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