Loop Object In Dart

In this article, we will discuss one of the brilliant features of Dart programming language which is the loop object. We’ll take a closer look at how you can apply it in your Dart code, and hopefully make your coding journey a bit more convenient and efficient.

Code snippet: Loop Object In Dart

Let’s discuss a loop object with the help of a code snippet.

void main() {
    var fruits = ['apple', 'banana', 'mango', 'grape', 'pineapple'];

    for (var fruit in fruits) {
      print(fruit);
    }

}

In this code, we are using a for loop to iterate through a list of fruits and print each fruit to the console.

Code Explanation for Loop Object In Dart

Let’s break this code down step by step.

Step 1: First, let’s declare a list of fruits. In Dart, lists are a type of collection, like an array in other programming languages. We do this by using the keyword ‘var’, followed by the name we want to give to the list ‘fruits’, and assigning it a list of string elements.

var fruits = ['apple', 'banana', 'mango', 'grape', 'pineapple'];

Step 2: Next, we move to using the loop object. We use the ‘for-in’ loop - this loop type is used specifically to loop through a list of elements.

for (var fruit in fruits) {
}

Here ‘fruit’ is the variable that temporarily holds the value of each list item in the ‘fruits’ list for each iteration.

Step 3: Within the loop, we use Dart’s print function to print each fruit to the console.

print(fruit);

This code block will loop through each item in the fruits list, assign each item to the variable fruit, and then print it.

This loop will keep iterating until it reaches the end of the ‘fruits’ list, ensuring that every fruit has been printed to the console.

And, there you have it - Looping through a list of items using Dart’s ‘for-in’ loop. Understanding and effectively using loops in Dart can greatly enhance the speed and efficiency of your programs, making your Dart coding significantly more dynamic and productive.