containsValue method - Map class - dart:core library (original) (raw)

description

containsValue abstract method

bool containsValue(

1. Object? value )

Whether this map contains the given value.

Returns true if any of the values in the map are equal to valueaccording to the == operator.

final moonCount = <String, int>{'Mercury': 0, 'Venus': 0, 'Earth': 1,
  'Mars': 2, 'Jupiter': 79, 'Saturn': 82, 'Uranus': 27, 'Neptune': 14};
final moons3 = moonCount.containsValue(3); // false
final moons82 = moonCount.containsValue(82); // true

Implementation

bool containsValue(Object? value);