Unable to resolve multiple definition error while linking files

I am working on a question from my computer programming course this semester and am unable to resolve a linker error that I am facing. Can someone take a look at the following files and let me know what’s wrong. As instructed, I placed guards to ensure multiple definitions don’t take place but the guards… Read More Unable to resolve multiple definition error while linking files

unit testing __init_subclass__ method in python 3.x

I am trying to unit test an inherited class for which its base class implements __init_subclass__ method. Code is the following: quick_test.py import unittest from unittest.mock import create_autospec class Parent(): PROPERTY = NotImplemented def __init_subclass__(cls, **kwargs): if cls.PROPERTY is NotImplemented: raise NotImplementedError("Please implement the `PROPERTY`.") super().__init_subclass__(**kwargs) def __init__(self, connection_type="default"): self.connection_type = connection_type class Child(Parent): PROPERTY… Read More unit testing __init_subclass__ method in python 3.x

Why python want us this : Non-default argument follows default argument

class Node(): def __init__(self,value,parrent=None,neigh) -> None: self.val=value self.parrent=parrent self.neigh=neigh Here I want to define a class. There is an error about neigh that non-default argument follows default argument. I saw the solution of this question but my main question is I want to know why python want us to do this? >Solution : Because Python… Read More Why python want us this : Non-default argument follows default argument

C++ Can not manage to display the class datatype array

This is the code I wrote, total beginner #include <iostream> #include <cstring> using namespace std; class Person { public: string ID; string name; string surname; string department; string email; public: //get and set functions for ID, Name, Surname, Department, Email properties string getID() { return this->ID; }; void setID(string _ID) { this->ID = _ID; };… Read More C++ Can not manage to display the class datatype array

Unable to read/write to file from Lua script running from HAPRoxy

I was using Lua with HAProxy to write logs into custom log file. Although my script is running totally fine. But I don’t see anything written in my text file. Here is my lua script which I am loading from HAProxy.cfg. local function foo(value) — MY CODE — file = io.open("test.lua", "a") io.output(file) io.write("The value… Read More Unable to read/write to file from Lua script running from HAPRoxy