Cursor vs GitHub Copilot Comparison

// Multi-file editing example with Cursor Composer
// User request: "Add caching to UserRepository and update the tests"

// Cursor edits these files simultaneously:
// 1. UserRepository.swift — adds a cache layer
// 2. UserRepositoryTests.swift — adds new test cases
// 3. DI Container — injects the cache dependency

// Inline editing with Cmd+K:
// By typing "Convert this function to async/await":
func getUser(id: String) async throws -> User {
    if let cached = await cache.get(id) {
        return cached
    }
    let user = try await api.fetchUser(id: id)
    await cache.set(id, value: user, ttl: 300)
    return user
}

// GitHub Copilot — inline completion and chat example

// 1. Inline suggestion: write a comment, get the code
// Fetch all users from Firestore ordered by creation date
func fetchUsers() async throws -> [User] {
    let snapshot = try await db.collection("users")
        .order(by: "createdAt", descending: true)
        .limit(to: 50)
        .getDocuments()
    return snapshot.documents.compactMap { doc in
        try? doc.data(as: User.self)
    }
}

// 2. Copilot Chat: /explain, /fix, /tests commands
// /tests → generates a unit test for the selected function
// /fix → fixes the selected buggy code
// /explain → explains what the code does