Tools

GitHub Copilot: A Complete Guide for Developers

November 16, 20259 min read

GitHub Copilot has transformed how developers write code. Powered by OpenAI's models, it provides intelligent code suggestions that can dramatically boost your productivity. Let's explore how to get the most out of this AI pair programmer.

What is GitHub Copilot?

GitHub Copilot is an AI-powered code completion tool that suggests entire lines or blocks of code as you type. It's trained on billions of lines of public code and can:

  • Complete functions from comments or function names
  • Suggest tests based on your code
  • Generate boilerplate code
  • Translate between programming languages
  • Answer coding questions inline

Essential Keyboard Shortcuts

VS Code

  • Tab Accept suggestion
  • Esc Dismiss suggestion
  • Alt + ] Next suggestion
  • Alt + [ Previous suggestion
  • Ctrl + Enter Open Copilot panel

JetBrains IDEs

  • Tab Accept suggestion
  • Esc Dismiss suggestion
  • Alt + ] Next suggestion
  • Alt + [ Previous suggestion

Tips for Better Suggestions

  • 1.
    Write descriptive comments first

    Copilot uses comments to understand intent. Write what you want before you code.

  • 2.
    Use meaningful function names

    calculateTotalPrice gets better suggestions than calc

  • 3.
    Provide context with imports

    Import libraries at the top—Copilot uses them to tailor suggestions.

  • 4.
    Give examples in comments

    Show input/output examples for complex transformations.

Copilot Chat: The Game Changer

Copilot Chat takes AI assistance further with conversational interaction:

  • /explain - Understand complex code
  • /fix - Get suggestions to fix bugs
  • /tests - Generate test cases
  • /doc - Add documentation
  • @workspace - Ask about your entire codebase

When NOT to Rely on Copilot

  • ⚠️ Security-sensitive code (passwords, encryption)
  • ⚠️ Code requiring specific business logic
  • ⚠️ Proprietary algorithms
  • ⚠️ Always review suggestions before accepting

💰 Pricing

GitHub Copilot is free for verified students, teachers, and maintainers of popular open source projects. Individual plan is $10/month or $100/year. Business plan is $19/user/month.