8.Dart Loops

                                          Dart Loops

Dart provides several looping constructs that allow you to iterate over a set of instructions multiple times. Here’s an overview of the common loop types in Dart with examples:

1. `while` Loop

The `while` loop executes a block of code as long as the condition is true.

void main() {
  int i = 0;

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

  2. `do-while` Loop

The `do-while` loop is similar to the `while` loop, but it guarantees that the loop body will be executed at least once.

void main() {
  int i = 0;

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

    3. `for` Loop

The `for` loop is used to execute a block of code a specified number of times.

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

  4. `for-in` Loop

The `for-in` loop is used to iterate over the elements of a collection (like a list or a set).

void main() {
  List<String> fruits = ['Apple', 'Banana', 'Cherry'];

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

   5.`forEach` Loop

The `forEach` method is used to execute a function for each element in a collection.

void main() {
  List<int> numbers = [1, 2, 3, 4, 5];

  numbers.forEach((number) {
    print('Number: $number');
  });
}

    6. Nested Loops

You can nest loops within each other to perform more complex iterations.

void main() {
  for (int i = 1; i <= 3; i++) {
    for (int j = 1; j <= 2; j++) {
      print('i: $i, j: $j');
    }
  }
}

  7. `break` and `continue` Statements

The `break` statement exits the loop immediately, and the `continue` statement skips to the next iteration of the loop.

 Using `break`

void main() {
  for (int i = 0; i < 5; i++) {
    if (i == 3) {
      break;
    }
    print('Iteration $i');
  }
}
```
Using `continue`

void main() {
  for (int i = 0; i < 5; i++) {
    if (i == 3) {
      continue;
    }
    print('Iteration $i');
  }
}
```