Named Constructor In Dart - Learn Dart Programming

[@michalsaky]

in constructor you have map and then json, what it means and why itis there?
Thank you.

[@khubaibirfan9215]

Sir pls make videos on single ton

[@jio-4568]

It was so useful. Thank you))

[@telugutechtutssudheer6212]

bro can you upload json video

[@abdurrehmanch27]

Level sir ji

[@foxe2206]

ty

[@welshmanmakwara9798]

Did the challenge
class Car {
//properties
String? name;
String? color;
String? price;
//Constructor 1
Car({required this.name, required this.color, this.price});
// Constructor 2
Car.other(this.name, this.color);
//Methods
display() {
if (price == null) {
price = "not stated";
}
print("This car is a $name");
print("its color is $color");
print("the price is $price");
print("-----------------------------");
}
}
void main(List args) {
Car car1 = Car(name: "Benz", color: "white", price: "5000");
car1.display();
Car car2 = Car.other("BMW", "BLUE");
car2.display();
}

[@BankITOfficer]

class Car {
String? name;
String? color;
var price;
//parameterized constructor
Car(this.name, this.color, this.price);
void dispaly() {
print("car name: $name");
print("car color: $color");
print("car price: $price");
}
//named constructor
Car.newcar(this.name, this.color, [this.price = "N/A"]);
}
void main(List args) {
Car c = Car("BMW", "BLACK", 100000);
c.dispaly();
Car car = Car.newcar("AUDI", "RED");
car.dispaly();
}

[@Lui_Catarino]

class Car {
String? name;
String? color;
double? prize;
Car({this.name, this.prize, this.color});
Car.second({this.name, this.color});
void display() {
print('Name: $name');
print('Color: $color');
print('Prize: $prize');
print('-----------------');
if (prize == null) {
prize = 0;
}
}
}
void main(){
Car honda= Car(name:'honda', color: 'black', prize: 500000);
honda.display();
Car bmw= Car(name: 'M4', color: 'Blue', prize: 400000);
bmw.display();
}

[@yusufvinfotech3582]

class Car{

// properties

String? name;
String? color;
int? prize;

//Constructor
Car(this.name,this.color,this.prize);

//Name Constructor
Car.name(this.name,this.color);


// Methods & Function
void display(){

if(prize==null){

print('The car prize is $prize');
}

print('The car name is $name');
print('The car color is $color');


}

}
void main(){

// 1st object 3paremeter given

Car car=Car('Mercedes','White',5000000);
car.display();



// 2nd object 2paremeter given
Car car2=Car.name('Porsche', 'Red');
car2.display();
}
Is the right???