wrapper

What happens when I wrap I/O streams twice?

由 老子叫甜甜 提交于 2019-12-02 06:05:54
I know that java I/O uses decorator pattern. But I feel that I understand its wrong. Please clarify difference between two code snippets: snippet 1: PipedInputStream pipedInputStream = new PipedInputStream(); PipedOutputStream pipedOutputStream = new PipedOutputStream(); pipedOutputStream.connect(pipedInputStream); ObjectOutputStream objectOutputStream = new ObjectOutputStream(pipedOutputStream); objectOutputStream.writeObject("this is my string"); ObjectInputStream objectInputStream = new ObjectInputStream(pipedInputStream); System.out.println(objectInputStream.readObject()); This application

C Wrapper for C++: How to deal with C++ templates?

由 北城余情 提交于 2019-12-02 05:26:28
问题 Earlier was asking about writing a c wrapper for c++ classes ( C Wrapper for C++ ), which is basically clear. There's one more question though: how do I deal with c++ templates? Let's say this is my class: template<typename T> class Temp { T get(); void set(T t); } Is there an elegant way to write a c wrapper? 回答1: You have to write a separate wrapper for each specialization. 回答2: While it is possible to wrap specific instantiations of a template with C, this is arduous and become infeasible

C++ function caller wrapper using variadic pack types expansion

由 生来就可爱ヽ(ⅴ＜●) 提交于 2019-12-02 04:28:59
I am bound to some APIs and I am tied to some function signatures like here: static bool WrapperFunction(JSContext *cx, unsigned argc, JS::Value *vp) I try to wrap objects and functions to use in javascript under SpiderMonkey. To integrate some C API, must be implemented wrappers for object data and wrapper methods for some object. My solution lead me to the following logic of the wrapper, in order to be able to call methods with several arguments, but I don't know how to achieve it: template<typename jsType, typename jsReturnType, typename MethodType, MethodType Method, typename...

Symfony Doctrine connection wrapper

由 这一生的挚爱 提交于 2019-12-02 03:46:16
问题 I have implemented in symfony2 a connection wrapper to connect to database depending on the subdomain. I followed the instructions on the question Symfony 2 : multiple and dynamic database connection It works fine but when I try to update schema, symfony is selecting the name of the database (dinamic_database) I have in the configuration file instead of the name of the database (database1) I have in Session. The problem is that the value of the private property $params in class Doctrine

Why won't wrapper div expand when it has an absolute child div

由 时光毁灭记忆、已成空白 提交于 2019-12-02 03:35:04
问题 I have a wrapper div set to 960px and inside it, I have another div called "slider". Slider is positioned absolutely in the middle of the screen using this code: #slider {width:390px; height:100px; position:absolute; margin:-100px 0 0 -200px; top:50%; left:50%; border:1px solid;} I have added borders to both the wrapper and slider divs so that I can see how they are positioned on the screen however, this has revealed that the wrapper is not expanding to contain the absolute slider div. How do

Preloading my library for a few functions while using the original by others using LD_PRELOAD

由 安稳与你 提交于 2019-12-02 03:25:53
问题 I have written a wrapper for the open() syscall and preload it using the LD_PRELOAD environment variable. I want only a few functions of the program to use the modified open() whereas others would use the original. Separating the functions in two programs is not an option as one calls the other. How can it be done? 回答1: The use of function interposition in the following example is similar to this answer. The example provides a write() wrapper function that calls the original write() . It is

Will creating a class template wrapper of a reference cause undefined behavoir?

由 帅比萌擦擦* 提交于 2019-12-02 03:25:02
Here is a code snippet: #include <iostream> #include <string> #include <vector> template<class T> class Wrapper { public: T& t; explicit Wrapper2( T& obj ) : t(obj) {} }; class Car { public: std::string color; std::string name; Car(){} Car( std::string colorIn, std::string nameIn ) : color( colorIn ), name( nameIn ){} }; int _tmain( int iNumArguments, _TCHAR* pArgumentText[] ) { typedef Wrapper<Car> car; // Create 2 Containers std::vector<car> collection1; std::vector<car> collection2; // Populate collection 1 with reference objects collection1.push_back( Car("black", "Ford") ); collection1

Hide class type in header

由 ≡放荡痞女 提交于 2019-12-02 03:04:52
问题 I'm not sure if this is even possible, but here goes: I have a library whose interface is, at best, complex. Unfortunately, not only is it a 3rd-party library (and far too big to rewrite), I'm using a few other libraries that are dependent on it. So that interface has to stay how it is. To solve that, I'm trying to essentially wrap the interface and bundle all the dependencies' interfaces into fewer, more logical classes. That part is going fine and works great. Most of the wrapper classes

Creating wrapper DIV using loops and ng-class in AngularJS

由 ☆樱花仙子☆ 提交于 2019-12-02 02:38:08
I'm currently working on creating a dynamic timeline using AngularJS. The data from my timeline is fetched from a JSON file, which I have already been successfully able at configuring. Here is what I currently have on PLNKR: http://plnkr.co/edit/avRkVJNJMs4Ig5mDrwJ8 This is my current navigation: <nav id="sticky-navigation"> <ul> <li><a href="#decade-1960s">1960</a></li> <li><a href="#decade-1970s">1970</a></li> <li><a href="#decade-1980s">1980</a></li> <li><a href="#decade-1990s">1990</a></li> <li><a href="#decade-2000s">2000</a></li> <li class="active"><a href="#decade-2010s">2010-Now</a><

Matlab Mex Socket Wrapper Library

由 烂漫一生 提交于 2019-12-02 02:37:47
Have anybody written a POSIX socket wrapping library for MATLAB using Mex? I basically want to open, write and read. Both sync and async alternatives would be nice. My main target platform is Linux. I know Mex and I know POSIX sockets. I just want to make certain that nobody else has done this already?. Amro If you want to work with sockets, you have two options: 1) use Java capabilities from inside MATLAB (see this answer here on SO for a quick example): TCP/IP Socket Communications in MATLAB TCP/IP Socket Communications in MATLAB using Java Classes 2) use C MEX-wrappers: msocket TCP/UDP/IP
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