Kotlin Multiplatform vs Flutter Comparison

// shared/commonMain
expect class UserRepository {
    suspend fun fetchUser(id: String): User
}

// androidMain
actual class UserRepository actual constructor() {
    actual suspend fun fetchUser(id: String): User {
        // Native Android HTTP
    }
}

// iosMain
actual class UserRepository actual constructor() {
    actual suspend fun fetchUser(id: String): User {
        // Native iOS URLSession
    }
}

import 'package:flutter/material.dart';

class UserScreen extends StatelessWidget {
  final UserRepository userRepo;

  @override
  Widget build(BuildContext context) {
    return FutureBuilder<User>(
      future: userRepo.fetchUser(id: 'current'),
      builder: (ctx, snapshot) {
        if (snapshot.hasData) return Text(snapshot.data!.name);
        return CircularProgressIndicator();
      },
    );
  }
}