[email protected] What are C++ features missing in Java

Following features of C++ are not there in Java.

No pointers
No sizeof operator
No scope resolution operator
Local variables in functions cannot be static
No Multiple Inheritance
No Operator Overloading
No preprocessor and macros
No user suggested inline functions
No goto
No default arguments
No unsigned int in Java
No -> operator in java
No stack allocated objects in java
No delete operator in java due to java’s garbage collection
No destructor in java
No typedef in java
No global variables, no global function because java is pure OO.
No friend functions
No friend classes
No templates in java

时间: 2024-10-21 16:08:58

[email protected] What are C++ features missing in Java的相关文章

Canvas: trying to use a recycled bitmap [email protected]

近期在做和图片相关显示的出现了一个问题,整理一下思路.分享出来给大家參考一下: Exception Type:java.lang.RuntimeException java.lang.RuntimeException: Canvas: trying to use a recycled bitmap [email protected] at android.graphics.Canvas.throwIfCannotDraw(Canvas.java:1282) at android.view.GLE

在Linux下使用gcc编译mesa文件报undefined reference to symbol '[email protected]@GLIBC_2.2.5和DSO missing from command line两个错误的解决方案

一.概述 在Linux系统下使用gcc编译用C语言写的mesa的示例程序. 环境:Ubuntu Server 18.04.1 二.问题的出现 在Ubuntu下安装好mesa所需的库文件,将目标文件从github上克隆下来之后编译. 以上截取的是用gcc编译目标文件和传参的介绍: gcc:源程序将用gcc编译器进行编译: osdemo,c:将要被编译的源程序: -lOSMesa:链接OSMesa库: -lGLU:链接GLU库: -lGL:链接GL库: -o:指定目标名称: osdemo:编译后生成

[email protected]一个高效的配置管理工具--Ansible configure management--翻译(六)

无书面许可请勿转载 高级playbook Finding files with variables All modules can take variables as part of their arguments by dereferencing them with {{ and }} . You can use this to load a particular file based on a variable. For example, you might want to select a

【[email protected]基础篇 ~】# 磁盘与文件系统

之前三篇文章我们简单介绍了Linux系统的用户管理,文件操作等,都是比较浅显的基本操作.这节我们要深入一下了,从文件系统我们要看到磁盘系统.从磁盘系统我们要看到操作系统的整体架构.废话不多少让我们开始学习吧! 磁盘与文件系统 1.磁盘系统 1.1 磁盘结构 如图所示,磁盘由扇区和柱面组成,分区的最小单位是柱面(柱是有厚度的,本图是截面图),磁盘读取的最小单位是扇区.第一扇区的MBR(446bytes)分区表可以最大包含四个分区(64bytes)的信息,即从开始柱面到结束柱面4组数据,每组16个字

linux下开发,解决cocos2d-x中编译出现的一个小问题, undefined reference to symbol '[email protected]@GLIBC_2.2.5'

解决cocos2d-x中编译出现的一个小问题 对于cocos2d-x 2.×中编译中,若头文件里引入了#include "cocos-ext.h",在进行C++编译的时候会遇到例如以下错误: undefined reference to symbol '[email protected]@GLIBC_2.2.5'/lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing from command li

“makefile”写法详解,一步一步写一个实用的makefile,详解 sed 's,$?\.o[ :]*,\1.o [email protected] : ,g' < [email protected]

目的:编写一个实用的makefile,能自动编译当前目录下所有.c/.cpp源文件,支持二者混合编译.并且当某个.c/.cpp..h或依赖的源文件被修改后,仅重编涉及到的源文件,未涉及的不编译. 二要达到这个目的,用到的技术有:1-使用wildcard函数来获得当前目录下所有.c/.cpp文件的列表.2-make的多目标规则.3-make的模式规则.4-用gcc -MM命令得到一个.c/.cpp文件include了哪些文件.5-用sed命令对gcc -MM命令的结果作修改.6-用include命

undefined reference to symbol '[email protected]@GLIBC_2.0'

编译程序的时候出现错误: /my/gtk/calculator$ gcc -o  main main.c  `pkg-config --libs --cflags gtk+-2.0` /usr/bin/ld: /tmp/ccUS8pua.o: undefined reference to symbol '[email protected]@GLIBC_2.0' //lib/i386-linux-gnu/libm.so.6: error adding symbols: DSO missing fr

[email protected]一个高效的配置管理工具--Ansible configure management--翻译(九)

如无书面授权,请勿转载 第四章 大型项目中Ansible的使用 New features in 1.3 There are two features in Ansible 1.3 that were alluded to previously in the chapter. The first feature is the metadata roles. They allow you to specify that your role depends on other roles. For ex

[email protected]一个高效的配置管理工具--Ansible configure management--翻译(十一)

无书面授权,请勿转载 第五章 自定义模块 Using a module Now that we have written our very first module for Ansible, we should give it a go in a playbook. Ansible looks at several places for its modules: first it looks at the place specified in the library key in its con