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D语言抽象函数
import std.stdio; import std.string; import std.datetime; abstract class Person { int birthYear, birthDay, birthMonth;
D语言抽象类
import std.stdio; import std.string; import std.datetime; abstract class Person { int birthYear, birthDay, birthMonth;
D语言使用final和static函数的接口
import std.stdio; // Base class interface Shape { public: void setWidth(int w); void setHeight(int h); static void myfunction1() {
D语言接口
import std.stdio; // Base class interface Shape { public: void setWidth(int w); void setHeight(int h); } // Derived class
D语言数据封装
import std.stdio; class Adder { public: // constructor this(int i = 0) { total = i; } // interface to outside world
D语言比较运算符重载
import std.random; import std.stdio; import std.string; struct Box { int volume; int opCmp(const ref Box box) const {
D语言二进制运算符重载
import std.stdio; class Box { public: double getVolume() { return length * breadth * height; } void setLength( double len ) {
D语言一元运算符重载
import std.stdio; class Box { public: double getVolume() { return length * breadth * height; } void setLength( double len ) {
D语言运算符重载
import std.stdio; class Box { public: double getVolume() { return length * breadth * height; } void setLength( double len ) {
D语言函数重载
import std.stdio; import std.string; class printData { public: void print(int i) { writeln("Printing int: ",i);
D语言多级继承
import std.stdio; // Base class class Shape { public: void setWidth(int w) { width = w; } void setHeight(int h) {
D语言基类和派生类
import std.stdio; // Base class class Shape { public: void setWidth(int w) { width = w; } void setHeight(int h) {
D语言静态函数成员
import std.stdio; class Box { public: static int objectCount = 0; // Constructor definition this(double l = 2.0, double b = 2.0, double h = 2.0) {
D语言静态
import std.stdio; class Box { public: static int objectCount = 0; // Constructor definition this(double l = 2.0, double b = 2.0, double h = 2.0) {
D语言指向类的指针
import std.stdio; class Box { public: // Constructor definition this(double l = 2.0, double b = 2.0, double h = 2.0) {