Function Pointers in C

C# unmanaged function pointers for iOS

C# unmanaged function pointers for iOS Just a reminder to myself when I need this thing next time for making Unity work with native code: delegate method should be static to please AOT compiler required for iOS method should have have [MonoPInvokeCal…

new thoughts over function pointers

Previous works do not relate to function pointers, but reading some documents reading and learning STL functions lets me know the pointer of functions is broadly used in functions such as XXX_if(). I don't think it's really that difficult, but it rea…

来源:https://cs.nyu.edu/courses/spring12/CSCI-GA.3033-014/Assignment1/function_pointers.html Function Pointers in C Just as a variable can be declared to be a pointer to an int, a variable can also declared to be a pointer to a function (or procedure).…

tips~function pointer

An simple example: #include<stdio.h> int plus(int a,int b) { return a+b; } int main() { int (*func)(int,int); func=+ //point to the function ''plus(int,int)'' printf(,)); ; } Another example: #include <stdio.h> #define MAX_COLORS 256…

Linux Programe/Dynamic Shared Library Entry/Exit Point && Glibc Entry Point/Function

目录 . 引言 . C/C++运行库 . 静态Glibc && 可执行文件入口/终止函数 . 动态Glibc && 可执行文件入口/终止函数 . 静态Glibc && 共享库入口/终止函数 . 动态Glibc && 共享库入口/终止函数 . 静态库/共享库->编译/使用.动态加载 . 和静态库/动态库相关的辅助工具 1. 引言 0x1: glibc Any Unix-like operating system needs a C…

Effective Java 21 Use function objects to represent strategies

Theory In the Java the function pointers is implemented by the declaring an interface to represent strategy and a class that implements this interface for each concrete strategy. It is possible to define an object whose methods perform operations on…

std::function，std::bind

std::function 和 std::bind 标准库函数bind()和function()定义于头文件中(该头文件还包括许多其他函数对象),用于处理函数及函数参数.bind()接受一个函数(或者函数对象,或者任何你可以通过”(…)”符号调用的事物),生成一个其有某一个或多个函数参数被“绑定”或重新组织的函数对象.(译注:顾名思义,bind()函数的意义就像它的函数名一样,是用来绑定函数调用的某些参数的.)例如: int f(int, char, double); // 绑定f()函数调用的…

(C/C++) Callback Function 回调（diao）函数

原文: http://www.codeguru.com/cpp/cpp/cpp_mfc/callbacks/article.php/c10557/Callback-Functions-Tutorial.htm Callback Functions Tutorial Introduction If you are reading this article, you probably wonder what callback functions are. This article explains…

(转) Pointers

原地址 http://www.cplusplus.com/doc/tutorial/pointers/ Pointers In earlier chapters, variables have been explained as locations in the computer's memory which can be accessed by their identifier (their name). This way, the program does not need to care…

c++ virturn function -- 虚函数

c++ virturn function -- 虚函数 pure irtual function -- 纯虚函数先看例子 #include <iostream> using namespace std; class Polygon { protected: int width, height; public: void set_values (int a, int b) { width=a; height=b; } virtual int area() = 0 ;//{return 0…

[转]ARM64 Function Calling Conventions

from apple In general, iOS adheres to the generic ABI specified by ARM for the ARM64 architecture. However there are some choices to be made within that framework, and some divergences from it. This document describes these issues. Choices Made Withi…

[转] iOS ABI Function Call Guide

source: apple ARMv6 Function Calling Conventions When functions (routines) call other functions (subroutines), they may need to pass arguments to them. The called subroutines access these arguments asparameters. Conversely, some subroutines pass a re…

类非静态成员的函数指针的使用 Function pointer of a non-static member function of a class

you can get the pointer of the method, but it has to be called with an object typedef void (T::*MethodPtr) (); MethodPtr method = &T::MethodA; T *obj = new T(); obj->*method(); If you need to have non-object pointer and you want to use object then…

c++ 11 bind function

Year 2011陈良乔C++11 FAQ std::function 和 std::bind 标准库函数bind()和function()定义于头文件中(该头文件还包括许多其他函数对象),用于处理函数及函数参数.bind()接受一个函数(或者函数对象,或者任何你可以通过”(…)”符号调用的事物),生成一个其有某一个或多个函数参数被“绑定”或重新组织的函数对象.(译注:顾名思义,bind()函数的意义就像它的函数名一样,是用来绑定函数调用的某些参数的.)例如: int f(int, char,…

剖析std::function接口与实现

目录前言一.std::function的原理与接口 1.1 std::function是函数包装器 1.2 C++注重运行时效率 1.3 用函数指针实现多态 1.4 std::function的接口二.std::function的实现 2.1 类型系统 2.1.1 异常类 2.1.2 数据存储 2.1.3 辅助类 2.1.4 内存管理基类 2.1.5 仿函数调用 2.1.6 接口定义 2.1.7 类型关系 2.2 方法的功能与实现 2.2.1 多态性的体现 2.2.2 本地函数对象 2.2…

First-class function

https://en.wikipedia.org/wiki/First-class_function In computer science, a programming language is said to have first-class functions if it treats functions as first-class citizens. Specifically, this means the language supports passing functions as a…

boost function bind ref

boost::function to encapsulate function pointers. 1. function #include <boost/function.hpp> #include <iostream> #include <cstdlib> #include <cstring> int main() { boost::function<int(const char*)> f = std::atoi; std::cout <…

明显调用的表达式前的括号必须具有(指针)函数类型编译器错误 C2064

看到“明显调用的表达式前的括号必须具有(指针)函数类型”这句时我才发现我的语文水平有多烂,怎么看都看不懂,折腾了半天才知道是哪里出了问题. 举个简单的例子 class CTest { void (CTest::*m_pFun)(); void CallFun() { (this->*m_pFun)(); //OK,对象指针和函数名一定要用括号括起来,函数名前面要加上*号 this->*m_pFun(); //error (this->m_pFun)(); //error } //本文链接…

Unity 最佳实践

转帖:http://www.glenstevens.ca/unity3d-best-practices/ 另外可以参考:http://devmag.org.za/2012/07/12/50-tips-for-working-with-unity-best-practices/ 组件的拆分可以参考:http://gameprogrammingpatterns.com/component.html,此网站上列出了很多的游戏开发中的设计模式,非常值得认真研读. 论坛里的讨论也很有价值:https://…

Automated Memory Analysis

catalogue . 静态分析.动态分析.内存镜像分析对比 . Memory Analysis Approach . volatility: An advanced memory forensics framework . github-djteller-MemoryAnalysis . Awesome Malware Analysis Projects 1. 静态分析.动态分析.内存镜像分析对比 0x1: Static Analysis Challenges . Time consuming…

C++ 关键字浅谈

这里有一个游戏:要求写一个符合C++标准的程序,包含至少十个连续而且不同的关键字.连续是指不能被标识符.运算符.标点符号分割.注意这里的“不同”要求,别想用 int main() { return sizeof sizeof sizeof sizeof sizeof sizeof sizeof sizeof (int); } 这个交卷,而且这个可以任意长.动动脑经,应该是可以想出来的.我们从很久很久以前(long long ago)开始吧, unsigned long long int ago;…

iOS-Runtime在开发中的使用及相关面试题

OC语言中最为强大的莫过于OC的运行时机制-Runtime,但因其比较接近底层,一旦使用Runtime出现bug,将很难调试,所以Runtime在开发中能不用就不用.下面我将介绍一些Runtime在开发中的使用,已经面试可能遇见的面试题. 1.OC语法和Runtime语法的区别 OC语法和Runtime语法的区别,换而言之就是OC中我们写的语句,最终被转换成Runtime中什么样语句.由于Xcode6之后,苹果不建议使用Runtime,也就是现在在编译的时候,runtime的函数不会提示,需要去…