What is Copilot?
GitHub Copilot uses large language models trained on public source code and other resources to suggest code completions, helper functions, and even multi-line snippets based on the code you’re editing. While earlier versions used OpenAI Codex, Copilot continues to evolve and integrate directly into common development environments rather than as a standalone app.- Improves developer workflow by reducing context switching
- Speeds up routine coding tasks and boilerplate generation
- Works across a broad set of languages and frameworks
Quick example: LiveReload + Express + EJS
Below is a concise example illustrating the type of snippet Copilot might suggest. It shows starting a LiveReload server in a Node.js/Express app and configuring the EJS view engine:Core features and how they help
Below is a concise summary of Copilot’s main capabilities and typical uses.
Copilot can significantly speed up development, but always review and test generated code for correctness, security, and license compliance before merging it into your codebase.
IDE and editor integrations
Copilot integrates directly into development editors so you can use it in-context:- Visual Studio Code — official extension for in-editor suggestions and Copilot Chat.
- JetBrains IDEs — available for PyCharm, IntelliJ IDEA, and other JetBrains products.
- Vim and Neovim — community and plugin integrations to bring Copilot to modal editors.
- Other editors — integrations continue expanding; check the official docs for current support.
Best practices
- Treat Copilot suggestions as a first draft: verify logic, edge cases, and dependencies.
- Run static analysis and security scans on generated code.
- Be mindful of license implications when using code suggestions derived from public repositories.
- Use Copilot Chat for iterative debugging and exploring alternative implementations.