/* Defines COUNTER. There must be exactly one such definition at file scope * within a program. */ #define COVERAGE_DEFINE(COUNTER) \ DEFINE_STATIC_PER_THREAD_DATA(unsigned int, \ counter_##COUNTER, ); \ static unsigned int COUNTER##_count(void) \ {…

catalog . How to Add New Functions to MySQL . Features of the User-Defined Function Interface . User-Defined Function . UDF Argument Processing . UDF Return Values and Error Handling . UDF Compiling and Installing . Adding a New Native Function . UDF…

转自:https://www.postgresql.org/docs/9.6/xfunc-c.html 可以作为学习基于c编写pg extension 的资料 36.9. C-Language Functions User-defined functions can be written in C (or a language that can be made compatible with C, such as C++). Such functions are compiled into dy…

Although  apply and  call  can implement same function. However, there is a litter different between them. Please pay attention to look at the examples below: Define an object Person Person=function(name,age){ this.name=name; this.age=age; } var pin=…

Functions in Java Prior to the introduction of Lambda Expressions feature in version 8, Java had long been known as a purely object-oriented programming language. "Everything is an Object" is the philosophy deep in the language design. Objects a…

网站上有很多Openfire Web方案,之前想用Smack 但是jar包支持客户端版本的,还有JDK版本问题  一直没调试成功  估计成功的方法只能拜读源码进行修改了. SparkWeb 官网代码很久没维护  CSDN上下来个版本但jar包路径不对  花了不少时间总算能跑起来,不过版本是flex3版本,太老了   自己花精力升级有点费时间呀 最后采用存脚本开发Strophejs,下面网站写的很详细 学习的网站:http://www.dotblogs.com.tw/sungnoone/archi…

Background C++ is one of the main development languages used by many of Google's open-source projects. As every C++ programmer knows, the language has many powerful features, but this power brings with it complexity, which in turn can make code more…

最近在看 Faster RCNN的Matlab code,发现很多matlab技巧,在此记录: 1. conf_proposal  =  proposal_config('image_means', model.mean_image, 'feat_stride', model.feat_stride); function conf = proposal_config(varargin) % conf = proposal_config(varargin) % ------------------…

Daniil's blog Machine Learning and Computer Vision artisan. About/ Blog/ Image Segmentation with Tensorflow using CNNs and Conditional Random Fields Tensorflow and TF-Slim | Dec 18, 2016 A post showing how to perform Image Segmentation with a recentl…

<Differential Geometry of Curves and Surfaces> by Manfredo P. do Carmo real line Rinterval I==============================================CH1 CurvesDEFINITION. A parametrized differentiable curve is a differentiable map a: I --> R3 of [an open in…

传统的编程是如下线性模式的: 开始--->代码块A--->代码块B--->代码块C--->代码块D--->......--->结束 每一个代码块里是完成各种各样事情的代码,但编程者知道代码块A,B,C,D...的执行顺序,唯一能够改变这个流程的是数据.输入不同的数据,根据条件语句判断,流程或许就改为A--->C--->E...--->结束.每一次程序运行顺序或许都不同,但它的控制流程是由输入数据和你编写的程序决定的.如果你知道这个程序当前的运行状态(包…

sqlite3是个很小的数据库,运行在手机,机顶盒上....那它就不可能像musql,sqlserver那么规范,有很多的数据类型,之前我也以为它定义了很多数据类型,其实不是他就5个存储类,那么多数据类型是根据一整套严谨的规则映射的!!还有什么char,varchar其实都是没有的..下面将结合文档详细讲解,相信看完你会了解更多,其实主要就是翻译文档.... sqlite官网:http://www.sqlite.org/ Sqlite3数据类型 大多数的数据库引擎(到现在据我们所知的除了sqli…

catalog . SQLite简介 . Sqlite安装 . SQLite Programing . SQLite statements 1. SQLite简介 SQLite是一款轻型的数据库,是遵守ACID的关系型数据库管理系统,它包含在一个相对小的C库中.它是D.RichardHipp建立的公有领域项目.它的设计目标是嵌入式的,而且目前已经在很多嵌入式产品中使用了它,它占用资源非常的低,在嵌入式设备中,可能只需要几百K的内存就够了.它能够支持Windows/Linux/Unix等等主流的操…

XBMC是一个相当酷的音频/视频播放器,号称家庭影视中心. 我是希望静态将一些库链接进可执行程序的,这样我用的ArchLinux就不用天天在更新一些东西了 但XBMC试了很多次,编译成功后,总是在运行是段错误. 后面没办法,走读代码发现XBMC使用了一个很巧妙的办法实现动态链接库的载入. XBMC定义了一个动态链接类DllDynamic,其中定义了Load/UnLoad/IsLoaded/ResolveExports几个接口 然后定义了一堆宏用于新类继承DllDynamic实现指定库的动态载入.…

问: Hi, I am newbie to wcf programming and a little bit confused between WCF Service and WCF Data  Service. Can someone please explain me these two service types. Can we use them alternatively or each one has its one well-defined specific area to use.…

This is a note for https://class.coursera.org/interactivepython-005 In week two, I have learned: 1.event-drvien programing 4 event types: Input: button, textbox Keyborad: key up, key down Mouse: click, drag Timer example: # Example of a simple event-…

FEE Development Essentials JS Basic function call() and apply() func1.bind(thisObj,arg1...argn) Custom object prototype Serialize object via JSON functions Object oriented in javascript Inheritance APIs Nodejs Global object and variable Module Core m…

转自:http://blog.leapoahead.com/2015/09/15/js-closure/ 我研究JavaScript闭包(closure)已经有一段时间了.我之前只是学会了如何使用它们,而没有透彻地了解它们具体是如何运作的.那么,究竟什么是闭包? Wikipedia 给出的解释并没有太大的帮助.闭包是什么时候被创建的,什么时候被销毁的?具体的实现又是怎么样的? "use strict"; var myClosure = (function outerFunction()…

原文: http://arne-mertz.de/2015/12/modern-c-features-override-and-final/ Today I write about a pair of less often discussed, less complicated features introduced in C++11, which are nevertheless useful. Both can provide some additional security and cla…

官网文档:  http://axis.apache.org/axis2/c/core/docs/axis2c_manual.html 从文档中可以总结出: 1. Axis2/C是一个用C语言实现的Web Service引擎.Axis2/C基于Axis2架构,支持SOAP1.1和SOAP1.2协议,并且支持RESTful风格的Web Service.基于Axis2/C的Web Service可以同时暴露为SOAP和RESTful风格的服务. 2. 构建Axis2/c服务的基本步骤: *Implem…

转载:https://blog.ionelmc.ro/2015/02/09/understanding-python-metaclasses/ None of the existing articles [1] give a comprehensive explanation of how metaclasses work in Python so I'm making my own. Metaclasses are a controversial topic [2] in Python, ma…

add by zhj:先收藏了,有时间看,图倒是不少,可以配合stackover flow上那篇文章一起看 原文:http://blog.ionelmc.ro/2015/02/09/understanding-python-metaclasses/ None of the existing articles [1] give a comprehensive explanation of how metaclasses work in Python so I'm making my own. Me…

Object Oriented Design is the concept that forces programmers to plan out their code in order to have a better flowing program. The origins of object oriented design is debated, but the first languages that supported it included Simula and SmallTalk.…

Divides one thing entire to many objects;Like perspectives, which rightly gazed uponShow nothing but confusion. . .—William Shakespeare, The Tragedy of King Richard the Second Inheritance is an important topic in most programming languages. In the cl…

主要参考: http://www.shido.info/lisp/scheme7_e.html Function fact that calculates factorials. (define (fact n) (if (= n 1) 1 (* n (fact (- n 1))))) (fact 5) is calculated like as follows: (fact 5) ⇒ 5 * (fact 4) ⇒ 5 * 4 * (fact 3) ⇒ 5 * 4 * 3 * (fact 2)…

这篇文章来自我今天碰到的一个问题,一个朋友问我使用map和hash_map的效率问题,虽然我也了解一些,但是我不敢直接告诉朋友,因为我怕我说错了,通过我查询一些帖子,我这里做一个总结!内容分别来自alvin_lee ,codeproject,codeguru.baidu等等! 先看看alvin_lee 朋友做的解析,我觉得还是很正确的,从算法角度阐述了他们之间的问题! 实际上这个问题不光C++会遇到,其他所有语言的标准容器的实现及选择上都是要考虑的.做应用程序你可能觉得影响不大,但是写算法或者核…

这是我看到的一片关于requirejs的初学者的文章,写的不错,下面结合自己的理解记录一下: 原文:http://www.sitepoint.com/understanding-requirejs-for-effective-javascript-module-loading/ Modular programming is used to break large applications into smaller blocks of manageable code. Module based c…

[SinGuLaRiTy-1012] Copyright (c) SinGuLaRiTy 2017. All Rights Reserved. 最近神犇喜欢考COCI...... 测试题目 对于所有的题目:Time Limit:1s  |  Memory:256 MB 第一题:银行账户(account)[parato] [题目描述] 大家都知道28定律吧,据说世界上20%的人拥有80%的财富.现在你对一家银行的账户进行检测,看是否符合28定律,或者有更强的定律.比如说,10%的人拥有85%的财富…

在正式开始学习OpenGL之前,我们需要先配置好OpenGL环境. IDE 首先我们需要选择一个IDE.支持OpenGL的IDE有很多,这里我们选择Visual Studio 2015(Windows平台)作为我们的IDE. GLFW OpenGL是一个图形库,而要画图,就需要先创建一个窗口.不幸的是,OpenGL没有提供创建窗口的功能,必须自己创建窗口.而创建窗口在每一个操作系统上都不同(在Windows上代码量也不少).因此我们将会使用一个窗口库来简化这一过程.常用的OpenGL窗口库有GL…

文章内容来自<Functional Programing in Swift>,具体内容请到书中查阅 Map, Filter, Reduce Functions that take functions as arguments are sometimes called higher- order functions. higher-order function(高阶函数)就是说函数可以作为另一个函数的参数. 在本章,我们将介绍一下swift标准库中在数组方面的一些相关的高阶函数,先介绍一些比较普…