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Posts: #Knowledge

Posts: # Knowledge

Nov 17 2025
How to copy a tree, but not word for word
Konstantin Volohovsky
Interviewers and LeetCode problems often focus on rotating binary trees. But what about transforming a general tree into a different one? How do we solve this problem, and what approaches can...
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Oct 21 2025
What's new in C# 14: overview
Dmitrii Kharitonov
C# 14 is almost here, so it's time for our annual feature overview. This year brought fewer changes than the last. Some might consider them minor, but is it really so? Let's take a closer...
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Oct 09 2025
Gadget chains in Java: how unsafe deserialization leads to RCE?
Vladislav Bogdanov
In this article, we'll explain what gadget chains are and look at examples (with schemas) of how careless deserialization with native Java mechanisms can lead to remote code...
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Sep 10 2025
What's new in Java 25
Egor Pishii
Java continues to actively evolve! The new Java 25 is just around the corner. This release brings changes to boilerplate code and constructors, and discontinues support for deprecated systems...
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Sep 05 2025
How we integrate best practices in Java
Evgenii Slepyshkov
This is a story of rewriting an application for DI containers, parsing dependencies, drawing schemas to avoid getting lost, and quietly praying to every possible deity that nothing suddenly...
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Aug 11 2025
PVS-Studio user annotations are now in Java
Evgenii Slepyshkov
Starting with PVS-Studio 7.38, the Java analyzer—just like its C# and C++ ones—now supports user annotations in JSON format. Why are they needed, and how can developers leverage them? We'll...
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Jul 25 2025
Method Handles are faster than reflection (sometimes)
Egor Pishii
How does Java support dynamic calls? From slow reflection to the optimized MethodHandle and invokedynamic—let's explore the evolution of dynamism on the JVM and dive into how MethodHandle works...
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Jun 20 2025
History of Java: evolution, legal battles with Microsoft, Mars exploration, Spring, Gradle and Maven, IDEA and Eclipse
Valerii Filatov
From inception to conquering the Red Planet. This article explores Java's history: from its first steps and legal battles with Microsoft to essential tools every Java developer relies on...
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Apr 28 2025
History of C#: versions, .NET, Unity, Blazor, and MAUI
Valerii Filatov
C# is a popular programming language leveraged to develop apps, web services, and games. Let's take a peek at the tangled history of its evolution from version to version and explore the...
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Mar 31 2025
Breaking down bugs in TDengine to master refactoring, part 3: price of laziness
Andrey Karpov
Get ready for code smells, classic errors, and typos when checking the TDengine project using PVS-Studio. Developers could've prevented many of them if they had carefully designed the code in...
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