Best way to do multiple constructors in PHP

You can't put two __construct functions with unique argument signatures in a PHP class. I'd like to do this: class Student { protected $id; protected $name; // etc. public function...

How does Python's super() work with multiple inheritance?

I'm pretty much new in Python object oriented programming and I have trouble understanding the super() function (new style classes) especially when it comes to multiple inheritance. For example if...

Pointer Member Variable Initialization in C++ Classes

This is going to sound so basic as to make one think I made zero effort to find the answer myself, but I swear I did search for about 20 minutes and found no answer. If a private c++ class member...

Repaired Records : Cell information from worksheet created from scratch

I'm receiving an error when opening my OpenXML created spreadsheet. The error is as follows. Repaired Records: Cell information from /xl/worksheets/sheet.xml part Repaired Records: Cell...

Instance attribute attribute_name defined outside __init__

I split up my class constructor by letting it call multiple functions, like this: class Wizard: def __init__(self, argv): self.parse_arguments(argv) self.wave_wand() #...

Entity Framework relationships between different DbContext and different schemas

So, I have two main objects, Member and Guild. One Member can own a Guild and one Guild can have multiple Members. I have the Members class in a separate DbContext and separate class library. I...

Multiple Constructors with Different Parameters Springs

public class DisplayMessage { String Message; private String Message1; private String Message2; public DisplayMessage(String Message, String Message1)...

Why must I have a parameterless constructor for Code First / Entity Framework

This is more of a question of "Why we do things" as my actual problem was solved but I don't know why. I was dealing with the following code inside my CountyRepository: public IEnumerable<County>...

Ninject dynamically bind to implementation

There are several questions on Stack Overflow that are similar but not exactly what I'm looking for. I would like to do Ninject binding based on a runtime condition, that isn't pre-known on...

Java - is there a thread safe way to allocate new objects without locks?

Okay, so I realize that all threads share the heap, which contains all the objects that have been allocated for a java program. this means if multiple threads try to allocate a new object, then...

How to register multiple implementations of the same interface in Asp.Net Core?

I have services that are derived from the same interface. public interface IService { } public class ServiceA : IService { } public class ServiceB : IService { } public class ServiceC : IService...

How to set @Autowired constructor params as "required=false" individually

I'm using the @Autowired annotation under a @Configuration class constructor. @Configuration public class MyConfiguration { private MyServiceA myServiceA; private MyServiceB myServiceB ...

MS Dynamics SDK returning "Cannot access a disposed object"

In our .NET project we are using the Dynamics SDK (version 8.2.0.2) to access Dynamics 365 from our website. We used the CrmSvcUtil tool to generate the early bound classes to work with. In our...

Static class for shared variables across multiple Windows

I am developing a software in WPF c#. My software has multiple windows. I need to share a same instance of on object across multiple windows (I am using legacy code, so I can not make that object...

Constructor overloading with Kotlin

As i have one User class having 2 parameters : first_name, last_name. So my kotlin class with be : data class User(val first_name:String, val last_name:String) Now i want a constructor which...

How can I use ComponentRef to destroy my Component from within?

I want to be able to destroy my component from within itself. (Not from parent since it's dynamically created in multiple areas). I've read from angular's api that they have a ComponentRef object....

Final variable and Constructor Overloading

I want to use Constructor Overloading in my class and I also would like to have some final variables to define. The structure I would like to have is this: public class MyClass{ private final...

Dart Multiple Constructors

Is it really not possible to create multiple constructors for a class in dart? in my Player Class, If I have this constructor Player(String name, int color) { this._color = color; ...

Specify SSL details for Kafka brokers in python

I need to connect to kafka instance which has multiple brokers with SSL. I am using kafka-python to consume and process data. I have seen link where they used kafka-python to connect to single...

How to combine multiple Comparator?

My very first post question here, be gentle please :) I am trying to create a comparator in Java that sorts based on various criteria. The Main class is very basic, it has several variables which...

Localization is not working building the application in Release mode with docker-compose (Docker for Linux) in VS2017

I am developing an application in Asp.net core that uses some translations depending on the language of the user. In my controller, I am trying to load the error message from a .resx file. I have...

How to use DictionaryModelBinder?

ASP.NET Core 2.2 DictionaryModelBinder [HttpGet("{id}", Name = "GetValue")] public async Task<IActionResult> GetValue( [ModelBinder(BinderType=typeof(DictionaryModelBinder<string,string>))] ...

Connect multiple Databases to .NET core project via Entity Framework Core

I am trying to create a .NET core application that connects to multiple databases, but using one generic repository that contains the logic for all CRUD operations. What is the best way to achieve...

How to add to current route and navigate - Angular

I'm working in an Angular 9 project. I have a table, that's reusable, for now I have two (Parent) components using the table. I want users to be able to select an item on the table and be routed...

Unable to create a broadcast stream in flutter

Note: Please read edit first. I want to create a broadcast stream for providing to Stream Builder. And I also have to attach websocket url to it. Using StreamController docs, this is what i've...

Record type with multiple constructors

How do I create multiple constructors for a record type in C#? I created a record type like this: public record Person(int Id, string FirstName, string LastName) Now I want to introduce another...

how to send message in WhatApp by pywhatkit

I wanna to send the same message to multiple contacts by WhatsApp?and the contacts before ever sent messages to me, so it's not spam.our code as below: # -*- coding: UTF-8 -*- import csv from...

Room kapt error when upgrading kotlin or gradle

I have been having for a long time this problem: I cannot upgraded the gradle version and kotlin gradle plugin in my app in Android Studio, the only solution that I can think of is to start a...

Choosing between base class or extended class - Python

I have a Python library which will be used by other people: class BaseClassA: class BaseClassB: def func0(self): this.class_a_obj = BaseClassA() BaseClassB creates a BaseClassA...

Identity of unnamed enums with no enumerators

Consider a program with the following two translation units: // TU 1 #include <typeinfo> struct S { enum { } x; }; const std::type_info& ti1 = typeid(decltype(S::x)); // TU 2 #include...