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c++ Programming Glossary: createWhat is a smart pointer and when should I use one? http://stackoverflow.com/questions/106508/what-is-a-smart-pointer-and-when-should-i-use-one destroy the object when it is no longer useful. Need to create the object to achieve some goal MyObject ptr new MyObject ptr.. as to when the object is destroyed. You still have to create the object but you no longer have to worry about destroying.. p2 new MyObject There is now one reference to the created object p1 p2 Copy the pointer. There are now two references..
http://stackoverflow.com/questions/1120140/csv-parser-in-c cell ' ' result.push_back cell return result I would just create a class representing a row. Then stream into that object #include.. row 3 n But with a little work we could technically create an iterator class CSVIterator public typedef std input_iterator_tag..
What does the explicit keyword in C++ mean? http://stackoverflow.com/questions/121162/what-does-the-explicit-keyword-in-c-mean implicit conversions. Adding it to the above class will create a compiler error at the function call DoBar 42 . It is now necessary..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c string back_inserter vector string tokens ... or create the vector directly vector string tokens istream_iterator string..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom it works by using the copy constructor's functionality to create a local copy of the data then takes the copied data with a swap..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses just a class which defines the operator . That lets you create objects which look like a function this is a functor struct.. private int x Now you can use it like this add_x add42 42 create an instance of the functor class int i add42 8 and call it assert.. functions they can contain state. The above example creates a function which adds 42 to whatever you give it. But that..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c be freed. Onto smart pointers a lot of the time we just create objects on the stack. For instance and stealing an example from.. doesn't work. We're returning a pointer to str but str was created on the stack so we be deleted once we exit foo . In other words.. all sorts of funky errors So what's the solution We could create str on the heap using new that way when foo is completed str..
http://stackoverflow.com/questions/4421706/operator-overloading Function call operator The function call operator used to create function objects also known as functors must be defined as a..
Why can templates only be implemented in the header file? http://stackoverflow.com/questions/495021/why-can-templates-only-be-implemented-in-the-header-file Because when instantiating a template the compiler creates a new class with the given template argument. For example template.. a .cpp Foo int f When reading this line the compiler will create a new class let's call it FooInt which is equivalent to the..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome 'Home' h2 THouse.Create 'Cabin' h1.NextHouse h2 Here we create a link from our home house to our cabin. We can follow the chain..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords name but can just grammatically analyze the input and then create a parse tree out of it. In C the above can yield different parse..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability different filenames may represent the same file. After you create two files a and b you might end up with a single file c or two..
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 from video device #1 CvCapture capture cvCaptureFromCAM 1 create a window to display the images cvNamedWindow mainWin CV_WINDOW_AUTOSIZE.. this guide as yours might be different. On Visual Studio create a new Win32 Console Application project and name it whatever..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used cache In strings In Sessions I can go all day long How to create the best singleton The smaller the better. I am a minimalist.. is thread safe Make sure it is never null Make sure it is created only once Lazy or system initialization Up to your requirements.. Up to your requirements Sometimes the OS or the JVM creates singletons for you e.g. in Java every class definition is a..
What is a smart pointer and when should I use one? http://stackoverflow.com/questions/106508/what-is-a-smart-pointer-and-when-should-i-use-one pointers the possibility of creating a dangling reference. Create the smart pointer on the heap MyObjectPtr pp new MyObjectPtr..
Installing OpenCV 2.4.3 in Visual C++ 2010 Express [closed] http://stackoverflow.com/questions/10901905/installing-opencv-2-4-3-in-visual-c-2010-express the OpenCV 2.4.3 installation on your computer. 2. Create a new project and set up Visual C Open Visual C and select File..
Create registry entry to associate file extension with application in C++ http://stackoverflow.com/questions/1387769/create-registry-entry-to-associate-file-extension-with-application-in-c registry entry to associate file extension with application..
What is exactly the base pointer and stack pointer? To what do they point? http://stackoverflow.com/questions/1395591/what-is-exactly-the-base-pointer-and-stack-pointer-to-what-do-they-point like push ebp Preserve current frame pointer mov ebp esp Create new frame pointer pointing to current stack top sub esp 20 allocate..
Namespace + functions versus static methods on a class http://stackoverflow.com/questions/1434937/namespace-functions-versus-static-methods-on-a-class in my MyMath namespace and refer to them via MyMath XYZ Create a class called MyMath and make these methods static and refer..
How do I start a new CUDA project in Visual Studio 2008? http://stackoverflow.com/questions/2046228/how-do-i-start-a-new-cuda-project-in-visual-studio-2008 link any .cu files in your project into your application. Create a new project using the standard MS wizards e.g. an empty console.. link any .cu files in your project into your application. Create a new project using the standard MS wizards e.g. an empty console..
How to use Boost in Visual Studio 2010 http://stackoverflow.com/questions/2629421/how-to-use-boost-in-visual-studio-2010 into a directory of your choice e.g. C boost_1_47_0 . Create a new empty project in Visual Studio. Open the Property Manager..
Simple example of threading in C++ http://stackoverflow.com/questions/266168/simple-example-of-threading-in-c of just using std thread so I want to point it out. Create a function that you want the thread to do. I'll demonstrate..
How do I best handle dynamic multi-dimensional arrays in C/C++? http://stackoverflow.com/questions/365782/how-do-i-best-handle-dynamic-multi-dimensional-arrays-in-c-c #include boost multi_array.hpp #include cassert int main Create a 3D array that is 3 x 4 x 2 typedef boost multi_array double..
How do I start a CUDA app in Visual Studio 2010? http://stackoverflow.com/questions/3778799/how-do-i-start-a-cuda-app-in-visual-studio-2010 Toolkit CUDA v4.0 extras visual_studio_integration . Create a new project using the standard MS wizards e.g. an empty console..
How to get a list of video capture devices (web cameras) on windows? (C++) http://stackoverflow.com/questions/4286223/how-to-get-a-list-of-video-capture-devices-web-cameras-on-windows-c EnumerateDevices REFGUID category IEnumMoniker ppEnum Create the System Device Enumerator. ICreateDevEnum pDevEnum HRESULT.. IEnumMoniker ppEnum Create the System Device Enumerator. ICreateDevEnum pDevEnum HRESULT hr CoCreateInstance CLSID_SystemDeviceEnum.. Device Enumerator. ICreateDevEnum pDevEnum HRESULT hr CoCreateInstance CLSID_SystemDeviceEnum NULL CLSCTX_INPROC_SERVER IID_PPV_ARGS..
Developing Internet Explorer Extensions? http://stackoverflow.com/questions/5643819/developing-internet-explorer-extensions some of these steps might be slightly different for you. Created a class library. I called mine InternetExplorerExtension ... Include System.Windows.Forms Reference Include System.Xml Create the following files IEAddon.cs using System using System.Collections.Generic.. true if registryKey null registryKey writeable_registry.CreateSubKey RegData registryKey.SetValue Data TextToHighlight writeable_registry.Close..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome class private FName array 0..9 of Char public constructor Create name PChar end When you initialize the house object the name.. other words the entrepreneur will choose the spot. THouse.Create 'My house' Memory layout ttttNNNNNNNNNN 1234My house Keep a.. unless you're already in it. var h THouse begin h THouse.Create 'My house' ... Memory layout h v ttttNNNNNNNNNN 1234My house..
http://stackoverflow.com/questions/58210/c-smtp-example printf Server s n buf MAIN int main int argc char argv Create Socket sock socket AF_INET SOCK_STREAM 0 if sock 1 perror opening..
Is there a way to instantiate objects from a string holding their class name? http://stackoverflow.com/questions/582331/is-there-a-way-to-instantiate-objects-from-a-string-holding-their-class-name const string sClassName msClassName sClassName Base Create if msClassName DerivedA return new DerivedA else if msClassName..
http://stackoverflow.com/questions/601558/multithreading-reference Tutorial 64 Bit Programming with Visual C How to Create and Terminate Threads C# Programming Guide share improve this..
Create WCF service for unmanaged C++ clients http://stackoverflow.com/questions/686452/create-wcf-service-for-unmanaged-c-clients WCF service for unmanaged C clients I need to get unmanaged..
Create Random Number Sequence with No Repeats http://stackoverflow.com/questions/693880/create-random-number-sequence-with-no-repeats Random Number Sequence with No Repeats Duplicate Unique random..
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