GitHub Copilot Tips: 10 Tricks Every Developer Should Know

GitHub Copilot Tips: 10 Tricks Every Developer Should Know

GitHub Copilot has transformed how developers write code. But are you using it to its full potential? Here are 10 tips that will supercharge your Copilot experience.

1. Write Detailed Comments First

Copilot generates better code when it understands context. Write a detailed comment before you start coding:

// Function to validate email addresses
// - Check for @ symbol
// - Verify domain has at least one dot
// - Return true if valid, false otherwise
// - Handle edge cases like empty strings
function validateEmail(email) {
  // Copilot will generate excellent code here
}

2. Use Copilot Chat for Explanations

Press Cmd+I (Mac) or Ctrl+I (Windows) to open Copilot Chat. Ask it to:

• Explain selected code
• Find bugs
• Suggest improvements
• Generate tests

3. Accept Partial Suggestions

You don't have to accept the entire suggestion. Use:

• Tab: Accept full suggestion
• Cmd+→: Accept word by word
• Cmd+]: Accept line by line

4. Provide Examples in Comments

Copilot learns from examples:

# Convert temperature
# Example: celsius_to_fahrenheit(0) -> 32
# Example: celsius_to_fahrenheit(100) -> 212
def celsius_to_fahrenheit(celsius):
    # Copilot now understands exactly what you want

5. Use Slash Commands in Chat

Copilot Chat supports powerful slash commands:

• /explain: Explain selected code
• /fix: Fix problems in code
• /tests: Generate unit tests
• /doc: Add documentation
• /simplify: Simplify complex code

6. Create Custom Snippets

Train Copilot on your patterns by keeping example files:

// In a file called "patterns.ts" (don't import, just keep open)
// Copilot will learn these patterns

// Pattern: API endpoint with error handling
async function apiEndpoint(req, res) {
  try {
    const data = await service.getData();
    res.json({ success: true, data });
  } catch (error) {
    res.status(500).json({ success: false, error: error.message });
  }
}

7. Use the @workspace Agent

In Copilot Chat, use @workspace to ask questions about your entire codebase:

• "@workspace where is authentication handled?"
• "@workspace how do we connect to the database?"
• "@workspace find all usages of UserService"

8. Generate Tests Automatically

Select a function and use /tests in chat:

/tests for the validateEmail function

Copilot will generate comprehensive test cases including edge cases.

9. Iterate with Follow-ups

Don't accept the first suggestion. Ask follow-up questions:

1. "Generate the function"
2. "Add error handling"
3. "Make it async"
4. "Add TypeScript types"

10. Use Keyboard Shortcuts

Master these shortcuts:

Bonus: Configure Copilot Settings

In VS Code settings, customize:

• Enable/disable for specific languages
• Adjust suggestion delay
• Configure inline suggestions
• Set up workspace-specific settings

Common Mistakes to Avoid

1. Accepting without reading: Always review suggestions
2. Not providing context: More context = better suggestions
3. Ignoring Chat: Chat is often better than inline
4. Not iterating: First suggestion isn't always best
5. Forgetting security: Don't paste sensitive data

Conclusion

GitHub Copilot is more than autocomplete—it's a coding partner. These tips will help you collaborate more effectively with AI and write better code faster.