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Interesting facts about Programming

Technology 4 hrs ago
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    Ifeanyi Chibueze
    4 hrs ago
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    🧵 "10 Mind-Blowing Concepts Every Programmer Should Know (but Most Don’t)"

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    Programming isn't just writing code—it's understanding the magic under the hood.
    Here are 10 powerful concepts every dev should know that will level up your skills 🚀
    Let’s go 👇

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    1. Time Complexity (Big-O)
      Why does one solution run instantly and another crawls?
      Big-O tells you how your code scales—mastering it makes you write faster code with less guesswork.

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    1. Memory Management
      What happens when you new an object or create a list?
      Understanding the stack vs heap, garbage collection, and pointers is core to writing efficient apps.

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    1. Concurrency & Parallelism
      Not the same thing.
      Concurrency = dealing with many tasks at once
      Parallelism = doing many tasks at the same time
      Async, threads, and coroutines are just the beginning ⚙️

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    1. Git Internals
      Most devs use Git like magic.
      But knowing how commits, branches, and HEAD work under the hood turns you from “just pushing” to Git ninja 🥷

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    1. Design Patterns
      Don’t reinvent the wheel.
      Patterns like Singleton, Factory, Strategy, and Observer solve common problems cleanly—and scale better.

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    1. Dependency Injection
      Not just a buzzword.
      It’s about writing code that’s modular, testable, and loosely coupled.
      The secret sauce to clean architecture.

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    1. Docker & Containerization
      Write code that works everywhere.
      Containers are the future of deployment—know how to build, run, and ship them.

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    1. Test-Driven Development (TDD)
      Red → Green → Refactor
      Write tests before code to build more reliable software. It feels slow at first, but saves hours of debugging later.

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    1. Functional Programming Concepts
      Immutability, pure functions, map/reduce, higher-order functions—these ideas even improve your OOP code.

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    1. How the Web Actually Works
      DNS, TCP/IP, HTTP, SSL, APIs, REST, WebSockets…
      If your app touches the internet, you need to know the journey from browser to backend.

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    These 10 concepts separate junior devs from pros.
    Bookmark this 🧠💾
    Which concept do you want to master next? Or want a deep dive on one of them?

    👇 Let's discuss in the replies.

     

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