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c++ Programming Glossary: oneWhy is “using namespace std;” considered bad practice? http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice call Blah from Foo and Quux from Bar without problems. But one day you upgrade to a new version of Foo 2.0 which now offers..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c of copying the extracted tokens to an output stream one could insert them into a container using the same generic copy..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom the idiom change when C 11 is used Although it's been mentioned in many places we didn't have any singular what is it question.. is a partial list of places where it was previously mentioned What are your favorite C Coding Style idioms Copy swap Copy.. arguably the most nuanced and difficult. How should it be done What pitfalls need to be avoided The copy and swap idiom is..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux this question If your goal is to use a profiler use one of the suggested ones. However if you're in a hurry and you.. If your goal is to use a profiler use one of the suggested ones. However if you're in a hurry and you can manually interrupt.. problems of different sizes. If you clean out any one of them the remaining ones will take a larger percentage and..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points are the built in operators as described in clause 5. When one of these operators is overloaded clause 13 in a valid context.. §1.3.12 as behaviour such as might arise upon use of an erroneous program construct or erroneous data for which this International.. arise upon use of an erroneous program construct or erroneous data for which this International Standard imposes no requirements..
http://stackoverflow.com/questions/4421706/operator-overloading are merely syntactic sugar their actual work could be done by and often is forwarded to plain functions. But it is important.. of thumb sometimes there might be reasons to break this one too. If so do not forget that the left hand operand of the binary.. of and use shortcut semantics. While the user defined ones because they are syntactic sugar for method calls do not use..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c abstractions 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.. is a product type of the element type and the size. If one or both of those ingredients differ you get a distinct type.. of the array. By dereferencing that pointer afterwards one can access individual elements std cout x 3 x 7 std endl If..
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 I'd like a meta function to determine if a type U is one of the types T1..Tn . For instance I've got a member template.. specialization of inUnion U has been found then U is not one of the types T1...Tn and I try to typedef an array with negative.. it is necessary to determine whether that name denotes one of these entities before continuing to parse the program that..
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 can happen . The book can be there you got lucky. Someone else's book can be there and yours could be in the hotel's furnace... be there and yours could be in the hotel's furnace. Someone could be there right when you come in tearing your book to pieces... out rooms sequentially and you can't check out until everyone with a room number higher than you has checked out. So let's..
Why do people say there is modulo bias when using a random number generator? http://stackoverflow.com/questions/10984974/why-do-people-say-there-is-modulo-bias-when-using-a-random-number-generator be equally distributed. So how do we solve this problem One way is to keep generating random numbers until you get a number..
What is a “translation unit” in C++ http://stackoverflow.com/questions/1106149/what-is-a-translation-unit-in-c
How do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work then the needed memory it is just divided into two parts. One is returned to caller the other is put back into the free list...
Why isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member X 12 const int sizeY sizeof Y 8 const int sizeZ sizeof Z 8 One can minimize the size of structures by putting the largest data..
Why aren't my include guards preventing recursive inclusion and multiple symbol definitions? http://stackoverflow.com/questions/14909997/why-arent-my-include-guards-preventing-recursive-inclusion-and-multiple-symbol is defined more than once and since this violates the One Definition Rule . Per Paragraph 3.2 3 of the C 11 Standard Every..
What do the following phrases mean in C++: zero-, default- and value-initialization? http://stackoverflow.com/questions/1613341/what-do-the-following-phrases-mean-in-c-zero-default-and-value-initializat c initialization c faq share improve this question One thing to realize is that 'value initialization' is new with.. complex and when the different methods kick in are subtle. One thing to certainly be aware of is that MSVC follows the C 98..
Best open XML parser for C++ [closed] http://stackoverflow.com/questions/170686/best-open-xml-parser-for-c vocabulary as well as parsing and serialization code. One of the unique features of CodeSynthesis XSD is its support for..
How to use Boost in Visual Studio 2010 http://stackoverflow.com/questions/2629421/how-to-use-boost-in-visual-studio-2010 where to find specific version and when to use which one. One way to do that would be to edit the file project config.jam..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom a hassle. We should strive to never repeat ourselves. One might wonder if this much code is needed to manage one resource.. call and our function will be found through ADL . One function will do. ˇThe reason is simple once you have the resource..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses all i There are a couple of nice things about functors. One is that unlike regular functions they can contain state. The..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward to do for us in C 11. In C 11 we get a chance to fix this. One solution modifies template deduction rules on existing types..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three new char ... throws an exception due to memory exhaustion. One possible solution is to introduce a local variable and reorder..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c std is_same int 8 int value an array is not a pointer One important context in which an array does not decay into a pointer..
http://stackoverflow.com/questions/589575/size-of-int-long-etc obscure platforms it's 8 and it can't be less than 8 . One additional constraint for char is that its size is always 1..
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 or not. It separates them into logically different groups One catches types another catches expressions. Expressions may depend..
Accessing class members on a NULL pointer http://stackoverflow.com/questions/669742/accessing-class-members-on-a-null-pointer a non virtual one on a null pointer is undefined behavior. One of the allowed results of undefined behavior is that your code..
How should I write ISO C++ Standard conformant custom new and delete operators? http://stackoverflow.com/questions/7194127/how-should-i-write-iso-c-standard-conformant-custom-new-and-delete-operators a legitimate pointer even when zero bytes are requested. One of the evident requirements that can even be inferred from new..
Calling virtual functions inside constructors http://stackoverflow.com/questions/962132/calling-virtual-functions-inside-constructors _n 2 If I write the following code main B b int n b.getn One might expect that n is set to 2. It turns out that n is set..
Qt Application segmentation fault with MinGW 4.7.2 http://stackoverflow.com/questions/13962857/qt-application-segmentation-fault-with-mingw-4-7-2
How Switch case Statement Implemented or works internally? http://stackoverflow.com/questions/14067547/how-switch-case-statement-implemented-or-works-internally 0 if less jmp to DEFAULT jmp to table REG data table ZERO ONE TWO end data ZERO call doZero jmp END ONE call doOne TWO call.. data table ZERO ONE TWO end data ZERO call doZero jmp END ONE call doOne TWO call doTwo jmp END DEFAULT call doDefault END..
Easy way to use variables of enum types as string in C? http://stackoverflow.com/questions/147267/easy-way-to-use-variables-of-enum-types-as-string-in-c as string in C Here's what I am trying to do typedef enum ONE TWO THREE Numbers I am trying to write a function that would.. 10 int process_numbers_str Numbers num switch num case ONE case TWO case THREE strcpy num_str num some way to get the symbolic..
How to make SIMPLE C++ Makefile? http://stackoverflow.com/questions/2481269/how-to-make-simple-c-makefile abhorrent professor never showed us how to. I only have ONE file a3driver.cpp. The driver imports a class from a location..
C++ singleton vs completely static object http://stackoverflow.com/questions/3841034/c-singleton-vs-completely-static-object name... the very annoying nature of this is that you have ONE instance of the object and many writes to it global variables..
Why should I avoid multiple inheritance in C++? http://stackoverflow.com/questions/406081/why-should-i-avoid-multiple-inheritance-in-c you should keep the hiearchy as a Tree a node has ONE parent not as a graph. 3. Interfaces Multiple inheritance of..
window border width and height in Win32 - how do I get it? http://stackoverflow.com/questions/431470/window-border-width-and-height-in-win32-how-do-i-get-it back with 1 and I know the title bar is taller than ONE pixel I also tried RECT r r.left r.top 0 r.right r.bottom 400..
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