Зміст курсу

Introduction to Dart

1. First Acquaintance with Dart

Dart Overview Your First Dart Application Function print() in Dart Dart Comments Basic Math Operations

2. Variables and Data Types in Dart

Data Types in Dart Variables in Dart Properties of Numbers in Dart String in Dart Bool, Equality and Relational Operators in Dart List in Dart Indexes in Dart

3. Conditional Statements

if Statement in Dart if...else Statement in Dart else-if Statement in Dart switch-sase Statement in Dart

4. Loops in Dart

Introduction to Loops while Loop in Dart do while Loop in Dart For-Loop in Dart Increment and Decrement break and continue

Indexes in Dart

Every element in the List, or String, has a unique address. Such addresses are called indexes:

Indexes start from 0. The first element is assigned the index 0, the second element is assigned the index 1, and so on.

We can retrieve an element from the list using its index with the following syntax:

javascript

Example

Let's print the element at index 1 from the List:

main


              1234
            
void main() {
  List<String> names = ["Bob", "John"];
  print(names[1]); // John 
}

Editing

Dart allows modifying the value of an item in a List. In other words, you can re-write the value of a List item.

main


              12345
            
void main() {
  List cars = ["BMW", "Porsche", "Ford"];
  cars[0] = "Toyota";
  print(cars); // ["Toyota", "Porsche", "Ford"]
}

The above example updates the value of the List item with index 0. The output of the code will be − ["Toyota", "Porsche", "Ford"].

String Indexes

In a String, we also have indexes.

main


              1234
            
void main() {
  String  user = "Alex";
  print(user[0]);
}

1. Select the element at index 1 in the string 'Codefinity'.

2. What will the following code output?

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Секція 2. Розділ 7

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Зміст курсу

Introduction to Dart

1. First Acquaintance with Dart

Dart Overview Your First Dart Application Function print() in Dart Dart Comments Basic Math Operations

2. Variables and Data Types in Dart

Data Types in Dart Variables in Dart Properties of Numbers in Dart String in Dart Bool, Equality and Relational Operators in Dart List in Dart Indexes in Dart

3. Conditional Statements

if Statement in Dart if...else Statement in Dart else-if Statement in Dart switch-sase Statement in Dart

4. Loops in Dart

Introduction to Loops while Loop in Dart do while Loop in Dart For-Loop in Dart Increment and Decrement break and continue

Indexes in Dart

Every element in the List, or String, has a unique address. Such addresses are called indexes:

Indexes start from 0. The first element is assigned the index 0, the second element is assigned the index 1, and so on.

We can retrieve an element from the list using its index with the following syntax:

javascript

Example

Let's print the element at index 1 from the List:

main


              1234
            
void main() {
  List<String> names = ["Bob", "John"];
  print(names[1]); // John 
}

Editing

Dart allows modifying the value of an item in a List. In other words, you can re-write the value of a List item.

main


              12345
            
void main() {
  List cars = ["BMW", "Porsche", "Ford"];
  cars[0] = "Toyota";
  print(cars); // ["Toyota", "Porsche", "Ford"]
}

The above example updates the value of the List item with index 0. The output of the code will be − ["Toyota", "Porsche", "Ford"].

String Indexes

In a String, we also have indexes.

main


              1234
            
void main() {
  String  user = "Alex";
  print(user[0]);
}

1. Select the element at index 1 in the string 'Codefinity'.

2. What will the following code output?

Все було зрозуміло?

Дякуємо за ваш відгук!

Секція 2. Розділ 7