c++ Programming Glossary: sinceWhy is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array is branch prediction. I admit it's not the best analogy since the train could just signal the direction with a flag. But in.. statement. This is very friendly to the branch predictor since the branch consecutively goes the same direction many times...
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration other words forward declaration is something of a misnomer since there are no other forms of class declarations in C . Thanks..
How to pass objects to functions in C++? http://stackoverflow.com/questions/2139224/how-to-pass-objects-to-functions-in-c values I remember in Java there are no such issues since we pass just the variable that holds reference to the objects...
http://stackoverflow.com/questions/3106110/what-is-move-semantics object from the argument but its construction was trivial since the heap data didn't have to be copied just moved. It wasn't..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three destructor is always empty. This is also fine in this case since we did not acquire any resources in the constructor. The members'..
http://stackoverflow.com/questions/4421706/operator-overloading in C Note The answers were given in a specific order but since many users sort answers according to votes rather than the time.. operators is boiler plate code. That is little wonder since operators are merely syntactic sugar their actual work could..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c that are easier to use and less error prone std vector T since C 98 and std array T n since C 11 so the need for arrays does.. less error prone std vector T since C 98 and std array T n since C 11 so the need for arrays does not arise quite as often as.. confusion. The size of the array is lost in this process since it is no longer part of the type T . Pro Forgetting the size..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration cannot use the type to declare a member or a base class since the compiler would need to know the layout of the type. Assuming..
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 Since a reference has its own space on the stack and since the address is the same as the variable it references. More..
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 new A value initialize A which is zero initialization since it's a POD. new B default initializes leaves B m uninitialized.. B value initializes B which zero initializes all fields since its default ctor is compiler generated as opposed to user defined...
Where do I find the current C or C++ standard documents? http://stackoverflow.com/questions/81656/where-do-i-find-the-current-c-or-c-standard-documents sometimes feel futile again especially for the C standards since they are drowned in the flood of discussions on programming.. of discussions on programming forums To get this started since these are the ones I am searching for right now where are there.. more useful than the significantly different C99 standard since C99 hasn't been widely implemented by compilers. If you want..
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 client 'C' linker will then link to using the 'C' name. Since C has overloading of function names and C does not the C compiler..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions Searching Google for gcc regex answers the question. Edit Since people keep complaining on SO about libstdc 's regex code here's..
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration link references to and complains about duplicated symbols. Since the debate what is a class declaration vs. a class definition..
Is there a performance difference between i++ and ++i in C++? http://stackoverflow.com/questions/24901/is-there-a-performance-difference-between-i-and-i-in-c cannot be optimized away by the compiler this return tmp Since the compiler isn't generating code but just calling an operator..
http://stackoverflow.com/questions/3106110/what-is-move-semantics size strlen p 1 data new char size memcpy data p size Since we chose to manage the memory ourselves we need to follow the.. could the client detect that the source had been modified. Since we don't really do a copy here we call this constructor a move..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward so the target type for the static cast is A or just A . Since x is already an A we do nothing and are left with an lvalue..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three already in some valid state that needs to be dealt with. Since we declared neither the copy constructor nor the assignment.. deleting the dangling pointer yields undefined behavior . Since the assignment does not take into account what name pointed.. get memory leaks all over the place. Explicit definitions Since memberwise copying does not have the desired effect we must..
http://stackoverflow.com/questions/4421706/operator-overloading on whether they should be members or non members. Since they change their left argument they alter the stream 䏭 state..
When to use virtual destructors? http://stackoverflow.com/questions/461203/when-to-use-virtual-destructors Base b new Derived use b delete b Here's the problem Since Base's destructor is not virtual and b is a Base pointing to..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c or any other expression of type T . Indexing operator Since the syntax x i is a bit clumsy C provides the alternative syntax.. line it detects an assignment from an array to a pointer. Since this is meaningless but pointer to pointer assignment makes..
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 to convert a number to string and vice versa in C Since this question gets asked about every week this FAQ might help..
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 variable but also takes up some space on the stack. Since a reference has the same address as the original variable itself.. holds a memory address. This variable is on the stack. Since a reference has its own space on the stack and since the address..
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 type the usual error messages are emitted by the compiler. Since whether it's a type or not determines parsing you will often..
What is the difference between _tmain() and main() in C++? http://stackoverflow.com/questions/895827/what-is-the-difference-between-tmain-and-main-in-c is wrong. wmain should take a wchar_t argument not char . Since the compiler doesn't enforce this for the main function you..
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