To check if a map is empty in Dart, you can use the isEmpty property. This property returns a boolean value indicating whether the map contains any elements.
We can check if a map is empty in Dart using the isEmpty property, which returns true if the map contains no elements and false otherwise.
For example,
myMap
. In this example, the map has string keys and integer values.isEmpty
property to check if the map is empty. The isEmpty
property returns a boolean value indicating whether the map contains any elements.print
function.void main() {
// Declare and initialize an empty map
Map<String, int> myMap = {};
// Check if the map is empty using isEmpty property
bool isEmpty = myMap.isEmpty;
// Print the result
print('Is the map empty? $isEmpty');
}
Is the map empty? true
We can check if a non-empty map is empty in Dart using the isEmpty property, which returns false if the map contains elements.
For example,
myMap
with some key-value pairs. In this example, the map has string keys and integer values.isEmpty
property to check if the map is empty. The isEmpty
property returns a boolean value indicating whether the map contains any elements.print
function.void main() {
// Declare and initialize a map
Map<String, int> myMap = {
'one': 1,
'two': 2,
'three': 3
};
// Check if the map is empty using isEmpty property
bool isEmpty = myMap.isEmpty;
// Print the result
print('Is the map empty? $isEmpty');
}
Is the map empty? false
We can check if a map is empty in Dart after clearing its elements using the isEmpty property, which returns true if the map contains no elements.
For example,
myMap
with some key-value pairs. In this example, the map has string keys and integer values.clear
method to remove all elements from the map, making it empty.isEmpty
property to check if the map is empty after clearing. The isEmpty
property returns a boolean value indicating whether the map contains any elements.print
function.void main() {
// Declare and initialize a map
Map<String, int> myMap = {
'one': 1,
'two': 2,
'three': 3
};
// Clear the map
myMap.clear();
// Check if the map is empty using isEmpty property
bool isEmpty = myMap.isEmpty;
// Print the result
print('Is the map empty? $isEmpty');
}
Is the map empty? true
In this tutorial, we learned How to Check if a Map is Empty in Dart language with well detailed examples.