Dart num truncateToDouble()
Syntax & Examples

num.truncateToDouble() method

The `truncateToDouble` method in Dart returns the double integer value obtained by discarding any fractional digits from the double value of this number.

Syntax of num.truncateToDouble()

The syntax of num.truncateToDouble() method is:

 double truncateToDouble()

This truncateToDouble() method of num returns the double integer value obtained by discarding any fractional digits from the double value of this.

Return Type

num.truncateToDouble() returns value of type double.


✐ Examples

1 Truncating a decimal number

In this example,

  1. We create a num variable num1 with the value 4.8.
  2. We use the truncateToDouble() method to truncate it to the nearest double integer value.
  3. We then print the result to standard output.

Dart Program

void main() {
  num num1 = 4.8;
  double truncatedValue = num1.truncateToDouble();
  print('Truncated value of $num1: $truncatedValue');
}

Output

Truncated value of 4.8: 4

2 Truncating another decimal number

In this example,

  1. We create a num variable num1 with the value -3.2.
  2. We use the truncateToDouble() method to truncate it to the nearest double integer value.
  3. We then print the result to standard output.

Dart Program

void main() {
  num num1 = -3.2;
  double truncatedValue = num1.truncateToDouble();
  print('Truncated value of $num1: $truncatedValue');
}

Output

Truncated value of -3.2: -3

3 Truncating an integer

In this example,

  1. We create a num variable num1 with the value 7.0, which is already an integer.
  2. We use the truncateToDouble() method to truncate it to the nearest double integer value.
  3. We then print the result to standard output.

Dart Program

void main() {
  num num1 = 7.0;
  double truncatedValue = num1.truncateToDouble();
  print('Truncated value of $num1: $truncatedValue');
}

Output

Truncated value of 7: 7

Summary

In this Dart tutorial, we learned about truncateToDouble() method of num: the syntax and few working examples with output and detailed explanation for each example.