Dart编程实例 - Typedef 类型定义
typedef ManyOperation(int firstNo , int secondNo); //function signature
Add(int firstNo,int second){
print("Add result is ${firstNo+second}");
}
Subtract(int firstNo,int second){
print("Subtract result is ${firstNo-second}");
}
Divide(int firstNo,int second){
print("Divide result is ${firstNo/second}");
}
Calculator(int a, int b, ManyOperation oper){
print("Inside calculator");
oper(a,b);
}
void main(){
ManyOperation oper = Add;
oper(10,20);
oper = Subtract;
oper(30,20);
oper = Divide;
oper(50,5);
}
