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5 Principles for Writing Testable TS Code You Can’t Ignore

 Level Up Coding

Member-only story 5 Principles for Writing Testable TS Code You Can’t Ignore SeQEW 8 min read · 2 days ago -- Share In this article, we’ll walk through: What tight coupling is and why it breaks tests ...

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Systems Thinking in an AI Era

 Level Up Coding

Why understanding what we build still matters Photo by Justin Zhu on Unsplash I just finished reading Thinking in Systems by Donella Meadows, and it’s one of those books that quietly rewires how you ...

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Python Advanced: 11 Performance Patterns for Data Engineers

 Level Up Coding

1. Avoid Python Loops → Vectorization Vectorized operations run in native optimized kernels using contiguous memory buffers and CPU vector instructions. Python never iterates; the CPU processes large ...

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