Dart double runtimeType
Syntax & Examples

double.runtimeType property

The `runtimeType` property in Dart represents the runtime type of an object.

Syntax of double.runtimeType

The syntax of double.runtimeType property is:

 Type runtimeType

This runtimeType property of double a representation of the runtime type of the object.

Return Type

double.runtimeType returns value of type Type.


✐ Examples

1 Get the runtime type of a string

In this example,

  1. We create a string str with the value 'Hello'.
  2. We use the runtimeType property to get its runtime type.
  3. We then print the runtime type to standard output.

Dart Program

void main() {
  String str = 'Hello';
  Type type = str.runtimeType;
  print('Runtime type of $str: $type');
}

Output

Runtime type of Hello: String

2 Get the runtime type of an integer

In this example,

  1. We create an integer variable number with the value 42.
  2. We use the runtimeType property to get its runtime type.
  3. We then print the runtime type to standard output.

Dart Program

void main() {
  int number = 42;
  Type type = number.runtimeType;
  print('Runtime type of $number: $type');
}

Output

Runtime type of 42: int

3 Get the runtime type of a list

In this example,

  1. We create a list of integers numbers.
  2. We use the runtimeType property to get its runtime type.
  3. We then print the runtime type to standard output.

Dart Program

void main() {
  List<int> numbers = [1, 2, 3];
  Type type = numbers.runtimeType;
  print('Runtime type of numbers list: $type');
}

Output

Runtime type of numbers list: List<int>

Summary

In this Dart tutorial, we learned about runtimeType property of double: the syntax and few working examples with output and detailed explanation for each example.