GitHub Copilot Agent Mode: From Code Completion to Autonomous Development

In January 2026, GitHub Copilot has evolved far beyond its origins as an autocomplete tool. With Agent Mode now the practical default for millions of developers, Copilot can autonomously debug issues, refactor entire codebases, orchestrate multi-file edits, and even execute terminal commands—all while maintaining repository context across sessions. This comprehensive guide explores how Agent Mode […]

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C# 14 Deep Dive: Extension Members, Field Keyword, and Null-Conditional Assignment in Production

C# 14, released alongside .NET 10 in November 2025, introduces features that significantly reduce boilerplate and enhance expressiveness. Three standout additions—Extension Members, the field keyword, and Null-Conditional Assignment—address long-standing developer pain points. This comprehensive guide explores each feature with production-ready patterns, performance considerations, and migration strategies for existing codebases. What’s New in C# 14: Feature […]

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Python 3.14t: Free-Threaded Python and the End of the GIL

After decades of discussion and multiple failed attempts, Python has finally achieved what many thought impossible: true multi-threaded parallelism without the Global Interpreter Lock (GIL). Python 3.14t (the “t” stands for “threaded”) represents the culmination of PEP 703 and years of careful engineering. This comprehensive guide explores what free-threaded Python means for your applications, with […]

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