All Questions

I'm trying to find the best design approach to handle a design change in a new project I'm working on. At the moment, the flow runs and makes some calculations based on a parameter which is used. ...

In a tennis match, each game has the possible scores of Love, 15, 30, 40, or Advantage. This could be modeled as a dictionary [0: "Love", 1: "15", 2: "30", 3: "40", 4: "Advantage"] or enumerated type ...

Context: A system tracks some sort of transactions (e.g. money flow) for it's whole user base. At the end of the month each entity capable of receiving transactions has to be sent exactly one bill ...

I'm implementing a custom templated container as part of a learning project in C++. The container makes use of different components like serialization, memory management, iterators. I am wondering ...

I have a .net core api trying to implement it according to domain drive design principles. In the domain layer there is a public Create method that contains all validation and business rules. If one ...

This is my first time PM experience. I have created a developer team and we want to work on an Angular-NodeJS project. I have defined some tasks and divided the project into the different modules/...

Saw below definition on https://http2.github.io/: What is HTTP/2? HTTP/2 is a replacement for how HTTP is expressed “on the wire.” It is not a ground-up rewrite of the protocol; HTTP methods, ...

I am a mobile app developer, and I have a point of sale app for iPads that at the time of making a sale, the app prints a ticket. Previously I used to use the Apple AirPort Express to connect a USB ...

I am primarily working with C#, dotnet and Visual Studio 2019 with extensions like Resharper enabled. Visual Studio with Resharper is a memory hog. I currently have the following PC at home where I ...

I'm writing a web server as a test project in node.js Whats really bothering me so far is the lack of control or even awareness of memory usage. Naturally I want to cache some stuff in RAM for faster ...

I am struggling with naming 3 variables defining the following concept: An action, after being performed, is not available for an amount of time and then is available again. The concept comprises 3 ...

I have this unit test: [Test] [AutoMoqData] [TestCaseSource(typeof(PhoneNumberTestCases))] public void PopulatesPhoneProperty( string inputValue, string ...

I have a collection of animals (interface) which contains birds and cats (both also interfaces). I want to print out all the cats to the console and I am forbidden to use instanceof (I did not make up ...

I've been assigned to a code base responsible for millions of dollars of transactions, per quarter, and has been in use for over a decade. Sifting through the solution, I see doubles used everywhere ...

Since I cut my teeth on code with OO, I’m biased toward using structs as classes without methods. However, there’s probably a good reason that typedef isn’t the default behavior of struct. What is it?

I am very confused in what I did with this mercurial repository ... I reversed a commit and after that I was never able to have a "unique" structure in my repository again. Can someone help me? > ...

The book "Implementing Domain Driven Design" (page 361) suggests to use special types to distinguish several kinds of IDs, e. g. using BookId(1) instead of just 1 of type Int or Long. In my Clean ...

For teaching purposes, I am trying to create a PHP implementation of a conceptual example of Builder Pattern: First of all, some products: class Product1 { private string $attribute1; ...

I would like to create a REST API with NestJs. But I want to add GraphQL as another top level layer later on. So for the start I have the basic layers controller, service and TypeORM repository. Let's ...

I would like to know which architecture is more suitable when considering data sharing between tenants: a Multi-instance (Single-tenant) or Multi-tenant architecture with a database by tenant. ...

We're designing and developing an enterprise application using Spring Boot for REST APIs and Angular 8 as the web client. It's been an year since we started. When I started, I read multiple articles ...

We have a API (written in .NET Core 3.1), published to Azure Web Services. This API talks to a database for authentication. After a succesfull authentication, the API connects to other databases, ...

I am unable to find an algorithm for optimizing or eliminating Phi instructions after some Control Flow Graph modifications. I have found algorithms for destructing and constructing the SSA form, and ...

In my ASP.net core application with Angular 2+ client, I work with a complicated object graph. In the object graph I have some objects with references to each other. I have a simplification included ...

In a SyML/UML activity diagram, how do you implement an OR gate ? There immediately came to mind to use a merge node. But does a merge node always have to come after a decision node? Also, I have ...

We are building some microservices that we will likely be deploying using GAE and I am fairly new to GAE. I’ve done a lot of other development in my day, but this paradigm is a little different. I’m ...

I'm wondering how do I properly secure this example app (https://github.com/brunodrugowick/spring-thymeleaf-vue-crud-example). The app is: A Spring (Boot) app with server-rendered pages via ...

TLS 1.3 seems to have a strong benefit of ephemeral keys which adds a measure of security. Does anyone know if there are plans to incorporate it into a future spec of OPC-UA? Would it make sense to ...

So, I have an API that authenticates with Identity Server OAuth2 and gives our user a JWT token when logging in through a front end application, this is a token that has access to everything. The API ...

I'm trying to create project siteWeb and mobile app with clean Architecture and Microservices. create identity service with separate database A and make another api service with other database B. for ...

It appeared, that I have in my pet project two abstractions: asset loaders and drawing tasks. For each abstraction I have some classes representing them (currently a single class for drawing task ...

I am developing a piece of commercial software for Windows, that requires users to obtain a license key in order to use it. It is run locally by clients with the assumption that their machine may not ...

What is the best way to name two classes that describe the same object, but where one of those classes does not hold the complete information? And should I make one of the classes inherit from the ...

In my team, we use git branching to keep different features separate (of course). However, one co-worker insists on keeping these features in different files as well to avoid merge conflicts. For ...

I want to learn how to document complex libraries or software products. My goal is that the clients, the requirement team and the developers understand what the product does. I want this document to ...

I have data in my database in UTC time format in this format (pseudo): [ { "date": "Date: 2020-02-12T08:00:00+0000" "productsSold": { 0: 122, 1: 130, 2: 90, ......

So to create a concrete factory that extends from an abstract factory class, I usually create a 'producer' class to determine what abstract factory to use. For example: public abstract class ...

Recently we had a discussion if rough DB schema (high level tables and columns) design should be part of system design phase or not. We have two confronting approaches in the company. Let's assume ...

Code below shows setting a value of an object's property and calling a private method in a setter to update the status of the object. Is this call a good practice or setter at most should only ...

So almost every post I read about oop by purists, they keep stressing about how using static methods is anti pattern and breaks the testability of the code. On the other hand every time I look for ...

The problem is the following: I have to download a set of JSON files and convert them to a certain format. There are 5 output formats (Let's call them A, B, C, D, E) and all of the downloaded json ...

While writing this question I found out that I'm faced with 2 problems: a testing one and a production one but I hope that resolving the situation can solve both issues. Now the question: I have a ...

I have a 24 hour "sliding window" sequence of "start" and "stop" events in memory comming from an iOT device. I'm only interrested in finding "stop" events followed by "start" events in order to ...

Lets say we have a layered architecture where A->B->C are three different layers. Function calls are passed from A to C and data is passed up from C to A. I think in this case A will have a reference ...

I have a class which has the purpose of providing file operations i.e. providing functionality to create the file, read, write and rewrite to the file. So, the main constituent of the class is ...

I have been developing an app that will require a cron task every minute. We are handling our cron tasks with Spring Boot Scheduling. Although, I am a little worried about the following question: ...

Why is assembly language called "assembly"? I was just watching the 1st video in the "Crockford on JavaScript" series. In it, Douglas says, ". . . the first program to make programming easier was ...

Just now I was reading a Python question on stack overflow, about clamping a list/array of results to be within a certain range. Once of the more simple answers suggested something like: ...

In a REST API, when I want to update all the properties of an entity, what is better to use in terms of good practices? PUT or PATCH? If it is better to use PATCH, why is PUT necessary? What would be ...

Considering a feature needs changes at many places in different modules of the software: UI, business logic, backend, etc. What is a good approach to do so? We are using dependency injection and ...