ListChange<T> class
Represents a change in a List.
This event captures details about what kind of modification occurred in the list (add, insert, remove, update, clear), the index affected, and the values before and after the change.
Example
void main() {
var addEvent = ListChange.add(0, 'apple');
print(addEvent.type); // ListChangeType.add
var removeEvent = ListChange.remove(1, 'banana');
print(removeEvent.oldValue); // banana
}
Constructors
- ListChange.add(int? index, T? newValue)
-
Represents a change in a
List.const - ListChange.clear()
-
Represents a change in a
List.const - ListChange.insert(int? index, T? newValue)
-
Represents a change in a
List.const - ListChange.remove(int? index, T? oldValue)
-
Represents a change in a
List.const - ListChange.update(int? index, T? oldValue, T? newValue)
-
Represents a change in a
List.const
Properties
- hashCode → int
-
The hash code for this object.
no setterinherited
- index → int?
-
The index affected by the change (if applicable).
final
- newValue → T?
-
The new value after the change (if applicable).
final
- oldValue → T?
-
The previous value before the change (if applicable).
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- type → ListChangeType
-
The type of change that occurred in the list.
final
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited