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c++ Programming Glossary: forcesHow to automatically register a class on creation http://stackoverflow.com/questions/10332725/how-to-automatically-register-a-class-on-creation only extend Animal if you specialize it. The constructor forces the static member reg to be initialized which in turn calls..
Seeking and reading large files in a Linux C++ application http://stackoverflow.com/questions/1035657/seeking-and-reading-large-files-in-a-linux-c-application your programs with gcc D_FILE_OFFSET_BITS 64 . This forces all file access calls to use the 64 bit variants. Several types..
In C++ source, what is the effect of extern “C”? http://stackoverflow.com/questions/1041866/in-c-source-what-is-the-effect-of-extern-c name can have C linkage regardless of namespace extern C forces a function to have external linkage cannot make it static Linkage..
Why does my STL code run so slowly when I have the debugger/IDE attached? http://stackoverflow.com/questions/1060337/why-does-my-stl-code-run-so-slowly-when-i-have-the-debugger-ide-attached debugger windbg kd cdb Visual Studio Debugger by default forces Windows to use the debug heap instead of the default heap. On..
Does “&s[0]” point to contiguous characters in a std::string? http://stackoverflow.com/questions/1986966/does-s0-point-to-contiguous-characters-in-a-stdstring contiguous under the current standard but the new standard forces it to be. In practice neither I nor Herb Sutter know of an implementation..
Do polymorphism or conditionals promote better design? http://stackoverflow.com/questions/234458/do-polymorphism-or-conditionals-promote-better-design Noise pleasureNoise 0 class Cat public Animal Compiler forces you to define both method. Otherwise you can't have a Cat object..
Default template arguments for function templates http://stackoverflow.com/questions/2447458/default-template-arguments-for-function-templates template class T int void mymember T vec ... Instead C forces that default template arguments are only allowed on a class..
May volatile be in user defined types to help writing thread-safe code http://stackoverflow.com/questions/2491495/may-volatile-be-in-user-defined-types-to-help-writing-thread-safe-code of what they do at compile time but rather for what it forces the compiler to do for you. c thread safety volatile share..
Returning object from function http://stackoverflow.com/questions/2616107/returning-object-from-function rather than a temporary. Scenario B Works except that it forces a Construct Construct Copy Cycle which may be much more expensive..
http://stackoverflow.com/questions/2910979/how-is-base-of-works Notice that thus the const is important because it forces the compiler to take the second conversion function. Since we..
What does “#define STR(a) #a” do? http://stackoverflow.com/questions/3534070/what-does-define-stra-a-do the first but by passing its argument to another macro it forces full macro expansion of its argument. So XSTR expr creates a..
How can I store objects of differing types in a C++ container? http://stackoverflow.com/questions/4738405/how-can-i-store-objects-of-differing-types-in-a-c-container list int mycountainer vector string mycontainer which forces mycontainer to only consist of one type. Before anyone suggest..
How to implement the factory pattern in C++ correctly http://stackoverflow.com/questions/5120768/how-to-implement-the-factory-pattern-in-c-correctly return new Foo some args Cool Often indeed. But then this forces the user to only use dynamic allocation. Static allocation is..
Some clarification needed about synchronous versus asynchronous asio operations http://stackoverflow.com/questions/5282659/some-clarification-needed-about-synchronous-versus-asynchronous-asio-operations operations is difficult to understand it often forces your program to split up operations into start and handle methods..
What's the usual way of controlling frame rate? http://stackoverflow.com/questions/5508922/whats-the-usual-way-of-controlling-frame-rate two and something that is usually optional is VSync. This forces the video card to only push out a new frame when the monitor..
http://stackoverflow.com/questions/6866206/volatile-and-createthread on x86 but it is going to be inefficient. For one this forces res1 to be set before res2 even though we don't really care..
How to create a UTF-8 string literal in Visual C++ 2008 http://stackoverflow.com/questions/688760/how-to-create-a-utf-8-string-literal-in-visual-c-2008 in particular locale is still 932 It appears that VC2008 forces all characters into the specified or default locale and that..
Square detection doesn't find squares http://stackoverflow.com/questions/7731742/square-detection-doesnt-find-squares upper threshold from slider and set the lower to 0 which forces edges merging Canny gray0 gray 0 thresh 5 dilate canny output..
Sleep less than one millisecond http://stackoverflow.com/questions/85122/sleep-less-than-one-millisecond select 0 0 0 0 tv On Windows however the use of select forces you to include the Winsock library which has to be initialized..
Show window in Qt without stealing focus http://stackoverflow.com/questions/966688/show-window-in-qt-without-stealing-focus I found it setAttribute Qt WA_ShowWithoutActivating This forces the window not to activate. Even with the Qt WindowStaysOnTopHint..
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