Do A For Loop In Dart

Dart is an expressive and efficient language that is used in a variety of applications, including Flutter for mobile app development. In this short article, we will learn how to use the for loop in Dart, a fundamental control flow statement in most languages that allows you to repeat a block of code multiple times.

Code snippet: For Loop in Dart

Here is a simple example of a for loop in Dart:

for (int i = 0; i < 5; i++) {
  print("Hello, Dart $i");
}

In this piece of code, we’re creating a loop that repeats five times, printing a message each time.

Code Explanation for For Loop in Dart

Let’s break down the code snippet to understand how it works.

Firstly, int i = 0; declares a variable ‘i’ of type integer and initializes it at zero. This ‘i’ variable is our counter that will keep track of how many rounds the loop has completed.

The i < 5; part is the condition that would keep the loop running. It’s essentially stating that, as long as ‘i’ is less than 5, the loop should continue executing.

i++ is an increment operation. Each time the loop executes, ‘i’ would increase by 1.

The block of code within the {} is what will be executed each time the loop runs. In this case, it’s a simple print statement that would output the phrase “Hello, Dart” followed by the current number of ‘i’.

In summary, the loop will print “Hello, Dart” five times to the console, with ‘i’ taking values from 0 to 4.

Remember that a for loop, like in our example, is a very handy tool in programming that allows repeating a certain block of code. Practically, it’s being used to iterate over arrays and lists, to perform actions on database records, to repeat tests and benchmarks, and many more.