Development Tips

21 May 2026

Making notes is good for long term memory and a little bit for short term memory because you tend to rely on written material. But overall its really great thing to make notes.
Get summary of any YouTube tutorial video in any language in Google Gemini. ❤️
Use VS Code default markdown file preview to the side - cmd+k v.
What is REPL:
- Read → reads your input
- Eval → evaluates/runs it
- Print → prints the result
- Loop → repeats continuously

Always keep a REPL (Read–Eval–Print Loop) on of nodejs for fast testing by running node on your terminal.

You can load a js file in repl by running: .load 1.js and you can get value of any variable’s value in the REPL mode by using the name of variable. Example:

  // Source: https://chatgpt.com/c/6a0f14b7-0098-83ec-962f-c95fb32c609e
  /* Note: Please add below 4 lines of code to your ~/.bashrc file.
  # Run a file in REPL mode and you can access top level variables and functions in REPLY. ❤️
  node.run_in_repl() {
      node -i -e "$(cat $1)"
  }
  */

  let cars = ['bmw', 'mercedes'];
  const bikes = ['ducati', 'splender'];

  let count = 0;

  setInterval(() => {
      // You get this log in REPL
      console.log('Ran interval function');
      // 🎉 You can run `count` in REPL and you get its latest value always.
      count++;
  }, 2000);

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