c++ Programming Glossary: cannotWhat 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 it is no longer in scope. Note that scoped_ptr instances cannot be copied. This prevents the pointer from being deleted multiple..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom destructor is called. Because the idiom repeats no code we cannot introduce bugs within the operator. Note that this means we..
When should static_cast, dynamic_cast and reinterpret_cast be used? http://stackoverflow.com/questions/332030/when-should-static-cast-dynamic-cast-and-reinterpret-cast-be-used There are a number of conversions that reinterpret_cast cannot do too. It's used primarily for particularly weird conversions..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three resources is hard. Noncopyable resources Some resources cannot or should not be copied such as file handles or mutexes. In..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special these criteria imply This does not mean an aggregate class cannot have constructors in fact it can have a default constructor.. but it should give you the basic idea. A reference cannot be value initialized. Value initialization for a non aggregate..
http://stackoverflow.com/questions/4421706/operator-overloading output and input operations for your own types you cannot change the standard library 䏭 stream types. That 䏭 why you need..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration This is why it's called an incomplete type . Therefore you cannot use the type to declare a member or a base class since the compiler.. forward declaration. class X Here's what you can and cannot do. What you can do with an incomplete type Declare a member.. without using its members void f3 X X X f4 X f5 What you cannot do with an incomplete type Use it as a base class class Foo..
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 the house. In contrast to the real world memory allocation cannot be told where to allocate but will find a suitable spot with.. to your house. Without this piece of paper you're lost and cannot find the house unless you're already in it. var h THouse begin.. might fail. Memory leak You lose the piece of paper and cannot find the house. The house is still standing somewhere though..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c y 6 int p p x p y p 10 assert x 5 assert y 10 A reference cannot and must be assigned at initialization int x 5 int y 6 int r.. 0 Pointer can be assigned NULL directly whereas reference cannot. If you try hard enough and you know how you can make the address.. same memory address as the item it references. References cannot be stuffed into an array whereas pointers can be Mentioned by..
Do the parentheses after the type name make a difference with new? http://stackoverflow.com/questions/620137/do-the-parentheses-after-the-type-name-make-a-difference-with-new you want need the parens sometimes you absolutely cannot have them and sometimes it doesn't matter. C 11 Update C 11..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope when it is validly associated with some program variable cannot be easily predicted ahead of time. The compiler generates calls..
Getting started with OpenCV 2.4 and MinGW on Windows 7 http://stackoverflow.com/questions/10860352/getting-started-with-opencv-2-4-and-mingw-on-windows-7 Mat im imread argc 2 argv 1 lena.jpg 1 if im.empty cout Cannot open image endl return 1 imshow image im waitKey 0 return 0..
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 Mat im imread c full path to lena.jpg if im.empty cout Cannot load image endl return 1 imshow Image im waitKey 0 The code..
How to install C++ plugin to Eclipse? http://stackoverflow.com/questions/12165746/how-to-install-c-plugin-to-eclipse 0 osrc HelloWorld.o .. src HelloWorld.cpp Internal Builder Cannot run program g The system cannot find the file specified. I also..
How to break out of a loop from inside a switch? http://stackoverflow.com/questions/1420029/how-to-break-out-of-a-loop-from-inside-a-switch conditions including checking for true . Is prone to bugs. Cannot easily determine where to put code that will always execute..
C++0x memory model and speculative loads/stores http://stackoverflow.com/questions/2001913/c0x-memory-model-and-speculative-loads-stores about threads and the memory model in C 0x Boehm Threads Cannot be Implemented as a Library Boehm and Adve Foundations of the..
http://stackoverflow.com/questions/3907028/opencv-process-every-frame 0 capture cvCaptureFromCAM 1 if capture fprintf stderr Cannot open initialize webcam n return Create a window for the video.. 0 capture cvCaptureFromCAM 1 if capture fprintf stderr Cannot open initialize webcam n return Create a window for the video..
Inspecting standard container (std::map) contents with gdb http://stackoverflow.com/questions/427589/inspecting-standard-container-stdmap-contents-with-gdb find method does not yield better results gdb p m.find 1 Cannot evaluate function may be inlined Is there a way to accomplish..
C++ for-loop - size_type vs. size_t http://stackoverflow.com/questions/4849678/c-for-loop-size-type-vs-size-t ix ivec ix 0 Why is it using vector int size_type ix 0 Cannot we say int ix 0 What is the benefit of using the first form..
How to set baud rate to 307200 on Linux? http://stackoverflow.com/questions/4968529/how-to-set-baud-rate-to-307200-on-linux speed 98 100 closestSpeed speed 102 100 sprintf stderr Cannot set serial port speed to d. Closest possible is d n speed closestSpeed..
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 ... template typename U struct inUnion char fail sizeof U Cannot be instantiated for any U template struct inUnion T The problem..
Integrate type name in static_assert output? http://stackoverflow.com/questions/6415186/integrate-type-name-in-static-assert-output Foo T OtherTag const static_assert fake_dependency T value Cannot create Foo T Tag from Foo T OtherTag . int main Foo int struct.. TagB fB fA Output on MSVC src main.cpp 74 error C2338 Cannot create Foo T Tag from Foo T OtherTag . src main.cpp 84 see reference.. from here prog.cpp 12 5 error static assertion failed Cannot create Foo T Tag from Foo T OtherTag . Much better but still..
When should I use C++ private inheritance? http://stackoverflow.com/questions/656224/when-should-i-use-c-private-inheritance virtual ClassSealer ... class FailsToDerive public Sealed Cannot be instantiated Sealed can be instantiated. It derives from..
c++ convert from LPCTSTR to const char * http://stackoverflow.com/questions/6587963/c-convert-from-lpctstr-to-const-char and I'm calling it MyfunFunction LPCTSTR wChar . error Cannot Convert Parameter 1 From 'LPCTSTR' to 'const char ' How to resolve..
Making a template parameter a friend? http://stackoverflow.com/questions/702650/making-a-template-parameter-a-friend virtual ClassSealer ... class FailsToDerive public Sealed Cannot be instantiated I found this example on this site somewhere..
In C++ I Cannot Grasp Pointers and Classes http://stackoverflow.com/questions/96285/in-c-i-cannot-grasp-pointers-and-classes C I Cannot Grasp Pointers and Classes I'm fresh out of college and have..
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