Use A Basic Loop In Dart

Looping is a significant aspect of any programming language. The Dart language, which powers Flutter, Google’s UI toolkit for crafting beautiful web, mobile, and desktop apps, is no different. It has several looping constructs, but in this article, our primary focus will be on the basic ‘for’ loop.

Code Snippet: Basic ‘For’ Loop In Dart

void main() {   
 for(int count = 0; count < 5; count++){
    print("Hello World: ${count + 1}");
  }
}

Code Explanation for Basic ‘For’ Loop In Dart

The aforementioned code snippet is a basic example of a ‘for’ loop in Dart.

Let’s dive into the explanation:

Step 1: The main() function is where the execution begins like other programming languages.

void main() { }

Step 2: Inside this main function, we have a ‘for’ loop. This loop continues to execute a block of code until a certain condition is met.

for(int count = 0; count < 5; count++){

In the ‘for’ loop above, int count = 0 initializes the variable ‘count’ that will be used in the loop. count < 5 is the loop condition that checks if the variable ‘count’ is less than 5. count++ is the iteration statement that gets executed at the end of each iteration. It is responsible for incrementing the count.

Step 3: Inside the loop, we have a print statement.

print("Hello World: ${count + 1}");

This line of code prints the string “Hello World” followed by the count for each iteration of the loop. Here the count+1 is used because count starts from 0. If you want to start from 1 then initialize the count to 1.

Once you run this program, it will print “Hello World” five times, each followed by the respective count.

Thus, a ‘for’ loop in Dart proves efficient in performing a task repeatedly for a specified number of times or until a certain condition is met, saving both effort and time.