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c++ Programming Glossary: getsWhat 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 auto_ptr MyObject p2 p1 Copy and transfer ownership. p1 gets set to empty p2 DoSomething Works. p1 DoSomething Oh oh. Hopefully..
http://stackoverflow.com/questions/1553382/is-delete-equal-to-delete Whether this leads to a memory leak wipes your hard disk gets you pregnant makes nasty Nasal Demons chasing you around your..
What does 'unsigned temp:3' mean? [duplicate] http://stackoverflow.com/questions/2950029/what-does-unsigned-temp3-mean of op is 32 bits that is sizeof op is 4 . The size always gets rounded up to the next multiple of 8 for every group of unsigned..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom the copied data safely altering our state and the old data gets put into the temporary. The old data is then released when the..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward A void f A a E static_cast A a When f receives an lvalue E gets an lvalue. When f receives an rvalue E gets an rvalue. Perfect... an lvalue E gets an lvalue. When f receives an rvalue E gets an rvalue. Perfect. And of course we want to get rid of the..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c once we exit foo . In other words by the time the caller gets the pointer it's useless and arguably worse than useless since..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points In addition to the initialization operation the value of y gets changed due to the side effect of operator. So far so good... point between ` i` right most and assignment to `i` `i` gets modified more than once b w two SP But the following expressions..
When to use virtual destructors? http://stackoverflow.com/questions/461203/when-to-use-virtual-destructors virtual destructors. I thought that the destructor always gets called no matter what and for every object in the chain. When..
What's this STL vs. “C++ Standard Library” fight all about? [closed] http://stackoverflow.com/questions/5205491/whats-this-stl-vs-c-standard-library-fight-all-about SGI STL. People think it's the entire standard library. It gets put on CVs. And it is misleading. I hardly know anything about.. they mean by it and refuse to believe that not everybody gets it . Clearly the term's usage is not uniform. In addition there..
How to convert a number to string and vice versa in C++ http://stackoverflow.com/questions/5290089/how-to-convert-a-number-to-string-and-vice-versa-in-c number to string and vice versa in C Since this question gets asked about every week this FAQ might help a lot of users. How..
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 that whatever values are stored in this area never gets changed by anything other than the memory allocator or the core..
Difference between 'struct' and 'typedef struct' in C++? http://stackoverflow.com/questions/612328/difference-between-struct-and-typedef-struct-in-c to a Foo you'd always have to call it a struct Foo . This gets annoying fast so you can add a typedef struct Foo ... typedef..
http://stackoverflow.com/questions/7011184/floating-point-comparison 0.7 as float becomes inferior to 0.7 as double when it gets promoted. And as Christian said 0.5 being a power of 2 is always..
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 Settings and make sure the option Empty Project gets selected Add a new file main.cpp to the folder Source Files..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes foo bar and baz. baz segfaults. Compiling with g rdynamic gets you symbol info in your output which glibc can use to make a.. stacktrace gcc g rdynamic . test.c o test Executing this gets you this output . test Error signal 11 . test handler 0x19 0x400911..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks automatic_pointer T pointer pointer pointer destructor gets called upon cleanup in this case we want to use delete ~automatic_pointer..
What is the difference between char a[] = “string”; and char *p = “string”; http://stackoverflow.com/questions/9460260/what-is-the-difference-between-char-a-string-and-char-p-string a 3 and p 3 happen to be the character l but the compiler gets there differently. Source comp.lang.c FAQ list · Question 6.2..
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