Introduction to Loops
About Loops
A loop in Dart is a programming construct that allows us to repeatedly execute a code block until a specific condition is met.
Loops are used to automate repetitive tasks and work with data collections or perform a specific operation a certain number of times. Loops are essential to programming and enable efficient and structured handling of repetitive tasks.
Note
In Dart, there are several types of loops, and each one is better suited for a specific task. Throughout the following chapters, you will explore each of them and understand where and when to use them.
Example
Let's say we have a code fragment that needs to be executed ten times. There are two ways to achieve this:
- Copy and paste the code many times
- Use a loop
Consider an example code to see the first approach to solving the task.
main.dart
As we can see, we have completed the task and displayed the text on the screen ten times. But what if the task is to display the text on the screen a thousand times or even a million times? In such cases, we can use a for loop:
main.dart
As you can see, with just three lines of code, we displayed the information on the screen ten times.
In the upcoming chapters, we will delve into these complex commands and symbols in detail. In reality, everything is often simpler than it may appear.
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Зміст курсу
Introduction to Dart
1. First Acquaintance with Dart
2. Variables and Data Types
3. Conditional Statements
4. List and String
Introduction to Dart
Introduction to Loops
About Loops
A loop in Dart is a programming construct that allows us to repeatedly execute a code block until a specific condition is met.
Loops are used to automate repetitive tasks and work with data collections or perform a specific operation a certain number of times. Loops are essential to programming and enable efficient and structured handling of repetitive tasks.
Note
In Dart, there are several types of loops, and each one is better suited for a specific task. Throughout the following chapters, you will explore each of them and understand where and when to use them.
Example
Let's say we have a code fragment that needs to be executed ten times. There are two ways to achieve this:
- Copy and paste the code many times
- Use a loop
Consider an example code to see the first approach to solving the task.
main.dart
As we can see, we have completed the task and displayed the text on the screen ten times. But what if the task is to display the text on the screen a thousand times or even a million times? In such cases, we can use a for loop:
main.dart
As you can see, with just three lines of code, we displayed the information on the screen ten times.
In the upcoming chapters, we will delve into these complex commands and symbols in detail. In reality, everything is often simpler than it may appear.
Все було зрозуміло?
