dart this constructor
class MyClass {
int param1;
MyClass(this.param1);
}
final obj = MyClass(100);
class MyClassNamed { // with named parameters
int param1;
MyClassNamed({required this.param1});
}
final objNamedParam = MyClassNamed(param1: 100);dart call constructor in constructor
class Chipmunk {
String name;
int fame;
Chipmunk.named(this.name, [this.fame]);
Chipmunk.famous1() : this.named('Chip', 1000);
factory Chipmunk.famous2() {
var result = new Chipmunk.named('Chip');
result.fame = 1000;
return result;
}
}dart constructor
void main() {
Human jenny = Human(height1 :15);
print(jenny.height);
Human jerry = Human(height1: 20);
print(jerry.height);
}
class Human {
double height = 0;
Human({height1 = 0}) { // constructor = initializes values of properties in the class.
this.height = height1;
}
}constructor in dart
//Creating object.
void main(){
SelfDrivingCar myLamb = SelfDrivingCar('Floride');
myLamb.drive();
}
//Initializing class Car.
class Car {
int numberofwheels = 4;
void drive() {
print('this is a car');
}
}
//using Inheritance
class SelfDrivingCar extends Car {
String destination='k';
SelfDrivingCar(String userDestination){ //constructor
destination = userDestination;
}
@override //polymorphism.
void drive() {
super.drive(); // accessing parent's methods.
print('sterring wheel to $destination');
}
}constructor flutter
class Student{
Student(int enNum){
print(enNum);
}
}
main(){
var myStudent = new Student(15);
}Copyright © 2021 Codeinu
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