The quality of Copilot's suggestions depends heavily on the quality of your comments. Better comments = better code generation.

Comment Techniques

• Describe intent: "// Parse ISO date string and return formatted MM/DD/YYYY"
• Specify constraints: "// Must handle null input gracefully"
• Give examples: "// e.g. input: '2024-01-15', output: '01/15/2024'"
• Name your parameters: Copilot reads parameter names as hints

Golden Rule

Write the comment you'd write for a junior developer. Copilot reads it the same way.

Reference:

Copilot best practices

https://docs.github.com/en/copilot/using-github-copilot/best-practices-for-using-github-copilot