positional arguments dart
void main() {
print(fullname("yo", "hope you have amazing day"));
}
// this fancy [] will do the job
String fullname(String fname, String lname, [String age = '23']) {
return fname + lname + age;
}positional arguments dart
void main() {
print(fullname("yo", "hope you have amazing day"));
}
// this fancy [] will do the job
String fullname(String fname, String lname, [String age = '23']) {
return fname + lname + age;
}dart positional arguments vs named arguments
void main(){
var catBob = Cat('Bob', 'Grey');
// display object with positional argument
print(catBob.displayCat());
// display object with constructor and named arguments
print(Dog(breed: 'Bulldog', name: 'Greg', color: 'Purple').displayDog());
}
// Cat class - with simple constructor and positional arguments
class Cat{
// properties
String name;
String color;
// simple constructor
Cat(this.name, this.color);
// method to display cat
String displayCat() {
return 'my cat is ${name} and he is ${color}';
}
}
// Dog class - with constructor and named arguments
class Dog{
String name;
String breed;
String color;
// constructor with named arguments
Dog({this.name, this.breed, this.color});
// method to display cat
String displayDog() {
// interpolate 'breed, name, color' with ${ value }
return 'my ${breed} is ${name} and he is ${color}';
}
}Copyright © 2021 Codeinu
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