Dart num hashCode
Syntax & Examples

num.hashCode property

The `hashCode` property in Dart returns a hash code for a numerical value.

Syntax of num.hashCode

The syntax of num.hashCode property is:

 int hashCode

This hashCode property of num returns a hash code for a numerical value.

Return Type

num.hashCode returns value of type int.


✐ Examples

1 Hash code of an integer

In this example,

  1. We create a num variable number with the value 42.
  2. We access its hash code using the hashCode property.
  3. We then print the hash code to standard output.

Dart Program

void main() {
  num number = 42;
  int hash = number.hashCode;
  print('Hash code of $number: $hash');
}

Output

Hash code of 42: 42

2 Hash code of a double

In this example,

  1. We create a num variable number with the value 3.14.
  2. We access its hash code using the hashCode property.
  3. We then print the hash code to standard output.

Dart Program

void main() {
  num number = 3.14;
  int hash = number.hashCode;
  print('Hash code of $number: $hash');
}

Output

Hash code of 3.14: 468150022

3 Hash code of a negative integer

In this example,

  1. We create a num variable number with the value -10.
  2. We access its hash code using the hashCode property.
  3. We then print the hash code to standard output.

Dart Program

void main() {
  num number = -10;
  int hash = number.hashCode;
  print('Hash code of $number: $hash');
}

Output

Hash code of -10: 536870902

Summary

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