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C# *

Multi-paradigm programming language encompassing strong typing, imperative, declarative, functional, generic, object-oriented (class-based), and component-oriented programming disciplines

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Why x^0 = 1 visually

Reading time 3 min
Views 1.1K

The traditional definition for the operation of exponentiation to a natural power (or a positive integer) had introduced approximately as follows:

Exponentiation is an arithmetic operation originally defined as the result of multiple multiplications a number by itself.

But the more precise formulation is still different:

Raising a number X to an integer power N is an arithmetic operation defined as the result of multiple [N by mod times] multiplications or divisions one by number X.

Let's figure it out under the cut! >>
Total votes 5: ↑5 and ↓0 +5
Comments 0

State Management for processes flow

Reading time 12 min
Views 1.1K

Most of the processes that people use in their work lives can be represented as some object that goes through some flow. Each flow contains many stages, in each one of them the object can be manipulated by certain group of users.

In this article I want to suggest an approaches to effectively handle such flow based systems. 

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Comments 1

NFun — expression evaluator for .Net

Reading time 6 min
Views 2.1K

Nfun is an embedded language and expression executor that supports primitive types, arrays, structures and lambda expressions.

Most likely, you have already met tasks that require such a tool, and in this article I want to show examples of its application, its capabilities and why it may be useful to you.

Let's learn some nFun!
Rating 0
Comments 1

How to handle Stale Element Reference Exception in E2E testing of modern SPA applications

Reading time 5 min
Views 2.9K

Hello everyone, my name is Denis, I am Software Developer Engineer in Test (SDET) at Bimeister. I am in charge of test software development - frameworks, automated tests, CI Pipelines configuration, and much more.

In this article, I will tell you how we defeated the Stale Element Reference Exception while developing our framework using Selenium WebDriver and C#.

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Total votes 2: ↑2 and ↓0 +2
Comments 0

Unity: What is a Coroutine and why is there an IEnumerator

Reading time 5 min
Views 13K

The title of the article is a question I was asked in an interview for a Middle position. In this article, we will look at Unity coroutines, what they are, and at the same time we will capture the topic of Enumerator \ Enumerable in C # and a little secret of foreach. The article should be very useful for beginners.

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Total votes 1: ↑1 and ↓0 +1
Comments 0

Why does my app send network requests when I open an SVG file?

Reading time 8 min
Views 2.1K

0923_SVG_XXE_ru/image1.png


You decided to make an app that works with SVG. Encouraged by the enthusiasm, you collected libraries and successfully made the application. But suddenly you find that the app is sending strange network requests. And data is leaking from the host-machine. How so?

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Total votes 3: ↑3 and ↓0 +3
Comments 0

ECS: under the hood

Reading time 6 min
Views 6.9K

This is the translation of my article about ECS. Original (in Russian).

ECS (Entity Component System) is an architectural pattern used in game development.

In this article, I am going to describe some of the general principles of ECS frameworks' inner workings and some of the problems I have faced during the development of my own.

When I first started learning about ECS everything seemed wonderful, but only in theory. I needed some real practice to make sure that all that they were saying about ECS was true.

I’ve tried different frameworks with different engines and programming languages. Mostly it was the gorgeous EnTT framework that I used with the Godot engine and LeoECS with Unity. I haven’t tried Unity’s native ECS from DOTS because it was rather unpolished at the time I was starting.

After a while, I got enough practical experience with ECS but it was still unclear to me how all this magic works under the hood. There are a few good blogs about ECS development (https://skypjack.github.io/ from the author of EnTT and https://ajmmertens.medium.com/ from the author of Flecs) but none of them gave me enough understanding about how they are implemented. So eventually, following Bender’s example, I decided that I’m gonna make my own ECS =)

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Total votes 2: ↑2 and ↓0 +2
Comments 0

Vulnerabilities due to XML files processing: XXE in C# applications in theory and in practice

Reading time 16 min
Views 1.2K

How can simple XML files processing turn into a security weakness? How can a blog deployed on your machine cause a data leak? Today we'll find answers to these questions, learn what XXE is and how it looks like.


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Total votes 1: ↑1 and ↓0 +1
Comments 0

Re-checking PascalABC.NET

Reading time 8 min
Views 550

Welcome all fans of clean code! Today we analyze the PascalABC.NET project. In 2017, we already found errors in this project. We used two static analysis tools (more precisely, plugins for SonarQube): SonarC# and PVS-Studio. Today, we analyze this project with the latest version of the PVS-Studio analyzer for C#. Let's see what errors we can find today, especially when our analyzer has become more advanced and got new features: it can find more exquisite errors and potential vulnerabilities.


0912_PascalABCNET_2/image1.png

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Total votes 3: ↑2 and ↓1 +1
Comments 0

Errors and suspicious code fragments in .NET 6 sources

Reading time 19 min
Views 934

0903_NET6/image1.png


The .NET 6 turned out to be much-awaited and major release. If you write for .NET, you could hardly miss such an event. We also couldn't pass by the new version of this platform. We decided to check what interesting things we can find in the sources of .NET libraries.

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Total votes 1: ↑1 and ↓0 +1
Comments 0

Structured Logging and Interpolated Strings in C# 10

Level of difficulty Medium
Reading time 10 min
Views 40K

Structured logging is gaining more and more popularity in the developers' community. In this article I'd like to demonstrate how we can use structured logging with the Microsoft.Extensions.Logging package and show the idea how we can extend it using the new features of C# 10.

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Total votes 6: ↑6 and ↓0 +6
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