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GeezerVison is showing www.30secondsofcode.org — 30 seconds of code

Discover hundreds
of coding articles to
level up your skills.

Browse articles by collection or check out the top picks and latest content below.

New & Popular Articles

  • Git · April 3, 2026

    Cherry-pick an unreachable GitHub commit

    Have you ever needed to cherry pick a GitHub commit that does not belong to any branch on this repository? Here's an easy way to do it.

  • Git · January 28, 2026

    A better alternative to force pushing

    Forced pushes in shared branches are dangerous, but did you know there's a safer alternative?

  • Git · January 7, 2026

    List all Git aliases

    Did you set up a lot of Git aliases and forgot what they are? List them all with this command.

  • Git · December 20, 2025

    Customize Git using aliases for common operations

    Increase your productivity and reduce your cognitive load by creating aliases for many common git operations.

  • JavaScript · November 4, 2025

    Explicit code is always better

    A thesis on why magic abstractions are harmful to codebases and teams.

  • Web development · October 24, 2025

    What I learned from vibe coding a small web project with GitHub Copilot and GPT-5 mini

    A short experiment to see what vibe coding feels like and how far AI can take a project without writing any code myself.

  • JavaScript · October 16, 2025

    Best Time to Buy and Sell Stock JavaScript Solution

    Have you tried solving "Best Time to Buy and Sell Stock" on LeetCode? Let's take a couple of approaches to tackle it in JavaScript.

  • JavaScript · October 8, 2025

    How your tech stack is causing your refactoring problems

    Infinite flexibility in your tech stack can lead to refactoring headaches and technical debt. Here's how to avoid the trap.

  • HTML · September 29, 2025

    A first look at the Speculation Rules API

    The new Speculation Rules API aims to deliver across the board performance optimizations with little developer effort. Let's see how!

  • Web development · September 20, 2025

    The virtues of pair programming

    Pair programming can be valuable for junior and senior developers alike, fostering collaboration and knowledge sharing.

  • JavaScript · September 14, 2025

    How to secure your JavaScript code from vulnerable dependencies

    Keep your code, data, and users safe by following these simple tips to secure your JavaScript projects from vulnerable dependencies.

  • Git · September 8, 2025

    How do I fix incorrect line endings in a git repository?

    Have you ever encountered an issue with incorrect line endings in your git repository? Let's fix it!

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