Find The Length Of An Array In Dart

Understanding how to determine the length of an array in Dart is a crucial part of the Dart programming language. This article will provide a simple code snippet and an easy-to-understand explanation.

Code snippet: Find The Length Of An Array In Dart

void main() { 
    List<int> intArray = [1, 2, 3, 4, 5]; 
    print('Length of Array : ${intArray.length}'); 
}

Code Explanation for Find The Length Of An Array In Dart

Let’s break down the code step by step for a better understanding.

First, we need to understand what the main function is in Dart:

void main() { 

In dart, every app must have a top-level main() function, which serves as the entry point to the app. The main() function returns void and has an optional List parameter for arguments.

Next, we define the Array:

List<int> intArray = [1, 2, 3, 4, 5]; 

In Dart, arrays are List objects. Here, we created a list of integers named ‘intArray’ and assigned it five elements: 1, 2, 3, 4, and 5.

Finally, we use the ‘print’ and ‘length’ functions to find the length of our array:

print('Length of Array : ${intArray.length}'); 

Here, the ${intArray.length} gets the number of items in the intArray list. ‘print’ then outputs this length to the console.

In this case, running this code snippet would output:

Length of Array : 5

This output displays that our ‘intArray’ has five elements. Thus, understanding how to determine the length of an array, or a List in Dart, is simple and straightforward!