Dart Loops

In Dart, loops are used to execute a block of code repeatedly until a specified condition is met. Dart provides several types of loops, including for, while, do-while, and for-in. Here's a brief overview of each type:

1. for Loop:

The for loop is used when you know the number of iterations required.

for (var i = 0; i < 5; i++) {
  print('Iteration $i');
}

2. while Loop:

The while loop is used when the number of iterations is not known beforehand and the loop continues until a specified condition is false.

var i = 0;
while (i < 5) {
  print('Iteration $i');
  i++;
}

3. do-while Loop:

The do-while loop is similar to the while loop, except it executes the block of code at least once before checking the condition.

var i = 0;
do {
  print('Iteration $i');
  i++;
} while (i < 5);

4. for-in Loop:

The for-in loop is used to iterate over elements of an iterable (like lists or maps).

var myList = [1, 2, 3, 4, 5];
for (var item in myList) {
  print(item);
}

Loop Control Statements:

Dart also supports loop control statements like break, continue, and return to control the flow within loops.

• break: Terminates the loop immediately.

• continue: Skips the rest of the loop's code for the current iteration and proceeds to the next iteration.

• return: Exits the function enclosing the loop.

for (var i = 0; i < 5; i++) {
  if (i == 2) {
    continue; // Skips iteration 2
  }
  if (i == 4) {
    break; // Terminates the loop when i is 4
  }
  print('Iteration $i');
}

These are the basic loop constructs in Dart. Depending on the situation and the nature of your task, you can choose the appropriate loop type.