Introduction to Dart

1. First Acquaintance with Dart

This section will tell you about the advantages of Dart and why you should learn it. We'll also write the first programs on Dart

About Dart

First Application

Function print()

Comments

Basic Math Operations

2. Variables and Data Types

Numbers and text are an integral part of every application and mobile application. This section will teach you how to work with these and other data types.

Data Types

Variables

Properties of Numbers

Bool, Equality and Relational Operators

3. Conditional Statements

Previously, our code only worked linearly from top to bottom. In this section, we will learn how to control the code flow.

if Statement

if...else Statement

else-if Statement

switch-sase Statement

4. List and String

Every serious program has a lot of data. Data is usually stored in sets. In this section, we will explore data collections.

String Properties and Methods

5. Loops

In programs, instructions often need to be repeated many times. To do it quickly, we can use loops. In this section, we will study cycles.

Introduction to Loops

while-Loops

Do-while

for-Loops

Increment and Decrement

Break and Continue

if...else Statement

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Example

main.dart

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( )

Task

Write a condition for the if statement to check whether the variable is of type int.

num is int - correct condition


using System;

namespace HelloWorld
{
  class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Hello World!");    
    }
  }
}

main.dart

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Зміст курсу

Introduction to Dart

1. First Acquaintance with Dart

About Dart First Application Function print()Comments Basic Math Operations

2. Variables and Data Types

Data Types Variables Properties of Numbers Bool, Equality and Relational Operators

3. Conditional Statements

if Statement if...else Statement else-if Statement switch-sase Statement

4. List and String

List Indexes String What are Methods?String Properties and Methods

5. Loops

Introduction to Loops while-Loops Do-while for-Loops Increment and Decrement Break and Continue

Introduction to Dart

if...else Statement

An if can be followed by an optional else block. The else block will execute if the Boolean expression tested by the if block evaluates to false.

Example

main.dart

In the example above, the age < 18, so the if code block hasn't been executed. The else code block executes when the if condition is false.

The else syntax is like the if syntax without a condition and parentheses ( )

Task

Write a condition for the if statement to check whether the variable is of type int.

num is int - correct condition


using System;

namespace HelloWorld
{
  class Program
  {
    static void Main(string[] args)
    {
      Console.WriteLine("Hello World!");    
    }
  }
}

main.dart

Все було зрозуміло?

Секція 3. Розділ 2