C#

SQL queries to find the employee with the highest salary and select departments with high average pay

Junior — Senior

Pyrus

Method that returns an array without duplicate elements in the original order without LINQ

Junior — Senior

Pyrus

Refactoring code fragment according to SOLID principles

Single-pass sequence filter excluding the last N elements

Junior — Senior

Pyrus

What is the result of an SQL query with a JOIN operator

Hiding methods in inheritance chain

Reliable call of an asynchronous method: detecting exception handling issues

What type of exception will be thrown from the nested try-catch-finally construct

What result will a LINQ query with side effects and deferred execution display

Exceptions in asynchronous calls: where are they caught?

Thread-safe modification of global configurations in a multithreaded application

Adding an event that responds to changes in the List1 list

Detection of synchronization issues in a multithreaded service

How to get integer values of enumeration members

Development of caching architecture for a software product

Code review and improvement of the organization service structure

Junior — Senior

Дом.рф

Detailed code analysis

Improving the efficiency of finding the largest number in a list

Dictionary behavior when using a custom key type

What output will appear in the console