nithinyesudas / dart_problems

Posting some dart programs

Dart Basics

Introduction

Dart is a programming language developed by Google that is often used for building cross-platform mobile, web, and desktop applications. It was designed with a focus on performance, productivity, and ease of use. Dart is an object-oriented language with syntax similar to Java or JavaScript, making it relatively easy to learn for developers familiar with those languages.

This README.md file provides a basic overview of Dart, covering its key features and concepts.

Features of Dart

Here are some of the notable features of Dart:

1. Strong Typing: Dart is a strongly-typed language, which means variables must have explicit types. However, Dart also supports type inference, allowing you to omit type annotations when the type can be inferred from the context.

2. Garbage Collection: Dart has built-in garbage collection, which automatically reclaims memory that is no longer in use. This helps developers avoid manual memory management and reduces the risk of memory leaks.

3. Asynchronous Programming: Dart provides built-in support for asynchronous programming through the use of async and await keywords. This makes it easier to write code that performs tasks such as network requests or file I/O without blocking the execution of other code.

4. Object-Oriented Programming: Dart is an object-oriented language, meaning it supports concepts such as classes, objects, inheritance, and polymorphism. It also includes features like interfaces and mixins for code reuse and composition.

5. Hot Reload: Dart's development tools, such as the Dart SDK and Flutter framework, provide a feature called Hot Reload. It allows developers to make changes to their code and see the results immediately without restarting the application. This significantly speeds up the development process.

Dart Syntax

Dart's syntax is similar to other C-style languages, such as Java or JavaScript. Here are some key syntax elements:

Variables

// Variable declaration with type annotation
int myNumber = 42;

// Variable declaration with type inference
var myString = 'Hello, World!';

Functions

// Function with return type
int addNumbers(int a, int b) {
  return a + b;
}

// Function with inferred return type
multiplyNumbers(int a, int b) => a * b;

Control Flow

// Conditional statement
if (condition) {
  // Code to execute if condition is true
} else {
  // Code to execute if condition is false
}

// Looping
for (var i = 0; i < 10; i++) {
  // Code to repeat
}

while (condition) {
  // Code to repeat while condition is true
}

Classes and Objects

class Person {
  String name;
  int age;

  // Constructor
  Person(this.name, this.age);

  // Method
  void sayHello() {
    print('Hello, my name is $name.');
  }
}

// Creating an instance of the class
var person = Person('Alice', 25);
person.sayHello();

Getting Started

To start programming with Dart, you can follow these steps:

1. Install the Dart SDK from the official Dart website (https://dart.dev).

2. Set up your preferred development environment. You can use an IDE like Visual Studio Code with the Dart extension, or simply use a text editor and the command-line tools.

3. Write your Dart code in a .dart file.

4. Compile and run your Dart code using the Dart SDK or a supported framework like Flutter.

Resources

• Dart Programming Language website: https://dart.dev
• Dart API reference: https://api.dart.dev
• DartPad: An online editor for experimenting with