Dart Syntax: Basic and Advanced

Basic Dart Syntax

Let's start with fundamental Dart syntax:

1. Variables


        var variableName = value;
        dynamic dynamicVariable = 'Dart is dynamic';

2. Data Types


        int age = 25;
        double piValue = 3.14;
        String name = 'Dart';
        bool isFlutterAwesome = true;

3. Functions


        int add(int a, int b) {
            return a + b;
        }

        // Shorter syntax
        int multiply(int a, int b) => a * b;

4. Control Flow


        if (condition) {
            // code
        } else {
            // code
        }

        for (var i = 0; i < 5; i++) {
            // code
        }

        while (condition) {
            // code
        }

5. Collections


        List numbers = [1, 2, 3];
        Set uniqueNames = {'John', 'Jane'};
        Map person = {'name': 'Alice', 'age': 30};

Advanced Dart Syntax

Now, let's explore some advanced Dart concepts:

1. Asynchronous Programming


        Future fetchData() async {
            // asynchronous code
        }

2. Classes and Objects


        class Person {
            String name;
            int age;

            Person(this.name, this.age);
        }

        var person = Person('John', 25);

3. Generics


        List numbers = [1, 2, 3];
        Map data = {'key': 'value'};

4. Exception Handling


        try {
            // code that might throw an exception
        } catch (e) {
            // handle the exception
        }

5. Flutter Widgets (Flutter-Specific)


        import 'package:flutter/material.dart';

        class MyApp extends StatelessWidget {
            @override
            Widget build(BuildContext context) {
                return MaterialApp(
                    home: Scaffold(
                        appBar: AppBar(title: Text('My Flutter App')),
                        body: Center(child: Text('Hello, Flutter!')),
                    ),
                );
            }
        }

This is a brief overview; Dart is a versatile language used in various contexts, including web and mobile development with Flutter. Refer to the official documentation for more in-depth information.