All Questions

page 54 at https://small.r7rs.org/attachment/r7rs.pdf For clarity, transcribing the example to pseudoJS syntax yields try { return 23 + raiseContinuable('should be a number'); } catch function(con) ...

I am planning to build a chat app using WebSocket. My question is when should I open the WebSocket connection? Is it whenever the app launched? Or when the chat list is opened? Which one is preferred ...

I am working on social platform with a distributed architecture. The platform should offer a chat module, but since the most efficient way to implement a chat is using websockets. I am not sure what ...

Our current application is Asp.net web api. We secure our calls to this api using owin to intercept each request. config.MessageHandlers.Add(new TokenValidationHandler)); When a request is made to ...

first of all i will explain you what i want to do. I have a Web application where are multiple rooms like Room1, Room2, Room3… Currently active users can join in one of these Rooms by clicking on it. ...

I have a simple app for storing the movies, that exposes REST API. I am using spring-boot. I am using this simple app as an example, however, the question is more about general good practice. I am ...

Is it okay that microservices may communicate to each other, causing cycle dependencies? As I understand from this post two microservices can be loosely coupled (each of them has interface, and can be ...

For the below program , why does functional coverage shows 3/5 and c/d coverage shows 0/5 ? while running bullseye codecoverage I am seeing this issue, please explain functional and c/d coverage as I ...

Is it a sign that something is wrong with the code design if you end up with a layer of functions that just forward request to a component? Exposing the component would avoid this but hurts ...

I have the following interface: class IHittable { virtual Intersections intersects(const Ray & ray) = 0 } which will be implemented by various geometric objects(Spheres, Triangles etc). Now ...

I am executing this program, for which c/d coverage output is 1/10, I am not getting this, how total c/d count come as 10. Also please explain how c/d coverage is calculated. int a=8,b=2,c=0,i; if (...

Background In the scenario GraphQL Federation was designed for, you have numerous GraphQL microservices in the backend, each with their own Schema Definition Language (SDL). Theoretically, these ...

How can I tell if my C function is a computable function in computer science? I am trying to write C code that would be acceptable to computer scientists in the field of the theory of computation. It ...

I have javascript script that creates the same div everytime the user clicks enter and then set the event listener to the new input in the new div. example: //creates the container, text and input for ...

I have been trying to come up with a method to "serialize" various objects into various different formats. For example: class Shape { public: virtual std::string_view name() const = 0; ...

It is my first time in commercial projects I am building an android-only social media platform using Java in Android Studio. I have the user interface ready and I will start to make the logic part of ...

I'm trying to implement a project using the Onion Architecture (aka Hexagonal, aka Ports and Adapters, aka Clean Architecture). I understand that the user interface uses Service interfaces instead of ...

I have a project written in python that I would like to create unit tests on. This project has a dependency on a database project which is a sort of abstraction layer to data connections. The issue ...

I am looking for a way of dealing with the following situation: 1- Have an items collection in MongoDB 2- Have a users collection in DynamoDB 3- Each document in the items collection has a "...

Sometimes the UML component diagram contains a database component. Does this database component represent a class that programmers create (which includes host, username, password, port... DB ...

Lets say we have a table 'A' with 4 referenced tables : Table B,C,D,E In our Data Acces Layer we could write a method that returns Table A containg every entity of B,C,D,E by joining in order to reuse ...

Many programming languages have an implementation language (mostly a system language like C) which is used to implement important parts of the core of the language. Besides the libraries are written ...

I am building an app (.NET, but whatever) which is supposed to be able to send notifications to users. Each Notification can either be a Reminder or a Newsletter, and I'll possibly add more types in ...

Based on this explanation of multi-tenant architectures here: A multi-tenant architecture is one where a single software instance and database serves multiple customers I cannot fathom how it is ...

Suppose, Google didn't have its' traffic congestion system. Meaning that we need to develop such a system which: ranks all the roads on our maps with 0-10, from 0 meaning undefined to 10 meaning a ...

I've written a fixed-point math library, which comes in two flavors: the signed and the unsigned flavor. The tests across the two flavors have lots of inputs in common. E.g. for the avg function: ...

If my service is inserting into a varchar column with a certain max length, I can either validate its length prior to inserting to avoid getting an error from the database if the string is too long ...

I want to execute everything in a user context. Meaning that if the request comes from one user then the service has a token of only this user and can't execute anything for another user. Now the ...

tl;dr I was wondering what is the best practice when having complex objects and using INotifyDataErrorInfo and every property can potentially have some validation implemented and a property can be a ...

I have an app where certain data is stored in the database. Multiple users access the same set of data (similar of a collaboration tool). However, they can non deterministically work on stale data. ...

A particularly nasty bug just happened to our software. (JS/react something was preventing onclick from firing about half the time - turned out a constant rerender was happening). This wasn't really ...

How should I go about using TDD and writing tests in this scenario? Suppose we have request handler classes. In short, a handler applies a "request" (e.g. Update details) to an entity then ...

I am working as a Senior Technical Writer for the European Commission in Brussels. I have been writing thousands of pages of User Manuals in pdf format over the past 15 years. I was wondering if you ...

I'm working in a large company and am doing my first Java project here. We have certain code style guidelines. In the Java guideline, it is said that "assertions are only intended for debugging ...

The context I have an IoT project where the sensors are sending data to my Postgres database. The sensors are manages by a stand-alone service which provides a REST API to query various information ...

I need to write continuously into a JSON file in C++. The format and structure are defined as requirement. The data is produced in the process itself and needs to be stored multiple times per second. ...

I have read that the null data type in JavaScript is a primitive data type, however due to a bug or something in the first version JavaScript, null is considered to be an object. However, let's assume ...

I'm experienced with storing relational data but first time attempting to store JSON in a mysql table. I am using mysql 5.7.8 which has the ability to store json data type as a column. Now when I ...

If you have a domain designed system with its own nomenclature, for example in the codebase you frequently see: num_of_pets: { cats: 4, dogs: 8, horses: 2, kids: 1, ...

For a paper I am writing, I need to find the origin of the following two phrases: Code against the interface, not the implementation and Test the interface, not the implementation (Note: the ...

I know this question has to have been answered in countless ways before, but I would appreciate some help pointing me in the correct direction. I am developing an embedded system that receives "...

I have a fairly what I think is simple question but am completely unfamiliar with design considerations when using docker containers. So I have been trying to come up with a structure for an app that ...

I've got a class which stores two data series like so. I need to do some complicated processing on each of these arrays, but for now we'll just get the average of each data series. I could either do ...

It seems that it would not be overly computationally expensive to store data obfuscated in memory, adding just 2-3 more cpu clocks per access once the data is on a register. But then again, if one is ...

We got a task to migrate repos from AzureDevOps TFVC Repo to AWS CodeCommit and all AzureDevOps Pipeline to Jenkins? Although i worked on Jenkins and AWS but About this task i am clueless. We have ...

I have worked with Git workflows where we release from dedicated branch specifically used for release (e.g. Gitflow's master/main branch). In such workflows, there will be multiple (at least 2) long ...

I have a question on azure iot hub and event hub, referring to Microsoft learn material example url below, why do you need to create an event hub for the anomaly detection use case and not directly ...

I’m currently writing a software for my company (3rd world country), and I wanted it as simple as possible to install and maintain, so I started with Qt and no server app beside the database, (MariaDB ...

I am building a webserver with Django and Django Rest Framework that will have a react frontend. I want to be able to send notifications to the user. Like those at the top right of this StackExchange ...

Hello im about to create dasbord for my website.. Dashboard will have multiple subpages like users, posts, roles etc.. I was thinking i would use only one rest api endpoint for those resources like /...