与面向对象中的接口类或抽象类中定义的函数组类似: 函数的具体执行依赖与函数医用的类型. In programming languages, ad-hoc polymorphism[1] is a kind of polymorphism in which polymorphic functions can be applied to arguments of different types, because a polymorphic function can denote a number o…
对泛型的类型添加约束,从而使泛型类型的变量具有某种通用操作. 再使用这些操作,参与到其它操作中. In computer science, a type class is a type system construct that supports ad hoc polymorphism. This is achieved by adding constraints to type variables in parametrically polymorphic types. Such a cons…
java基础篇 之 构造器内部的多态行为 我们来看下下面这段代码: public class Main { public static void main(String[] args) { new Son(5); } } class Person{ void draw(){ System.out.println("person draw"); } Person (){ System.out.println("before person draw"); draw(…
