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c++ Programming Glossary: beforeWhy 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 for the sake of argument suppose this is back in the 1800s before long distance or radio communication. You are the operator of..
What is this weird colon-member syntax in the constructor? http://stackoverflow.com/questions/1711990/what-is-this-weird-colon-member-syntax-in-the-constructor the member variable but I've never seen this syntax before. It looks like a function constructor call but for an int Makes..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom dumb_array other if this other 1 get the new data ready before we replace the old std size_t newSize other.mSize int newArray.. possible to alter the state of this . What we did manually before for a strong exception guarantee the compiler is doing for us..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three assignment does not take into account what name pointed to before the assignment sooner or later you will get memory leaks all.. and assignment we must tear down the old state before assigning to name to prevent memory leaks. Also we have to protect.. statement throws the object is still in the same state as before. None of the following statements will throw an exception strcpy..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points of all function arguments if any which takes place before execution of any expressions or statements in the function body.. or the compiler's whether the access should take place before or after the incremented value is stored. So the behaviour is..
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 I clear the address from my variable. Memory layout h v before free ttttNNNNNNNNNN 1234My house h now points nowhere after.. place in the middle of a critical operation. h v before free ttttNNNNNNNNNN 1234My house h v after free xx34My.. in memory but since it might not be complete using it as before might fail. Memory leak You lose the piece of paper and cannot..
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 determine whether that name denotes one of these entities before continuing to parse the program that contains it. The process.. separating them. t x f The syntax allows typename only before qualified names it is therefor taken as granted that unqualified.. the code We will need to insert template immediately before the template name as specified by 14.2 4 . This looks like t..
http://stackoverflow.com/questions/6438086/iterator-invalidation-rules Sequence containers vector all iterators and references before the point of insertion are unaffected unless the new container..
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 new method's local variables come alive. They'll be dead before the first method's local variables are dead. The relative order..
Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513? http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of 0x3F00 and 0x4700 . All of these belong to the same set. Before reading 0x4700 all lines in the set would have been occupied...
Purpose of Trigraph sequences in C++? http://stackoverflow.com/questions/1234582/purpose-of-trigraph-sequences-in-c Trigraph sequences in C According to C '03 Standard 2.3 1 Before any other processing takes place each occurrence of one of the..
What is an undefined reference/unresolved external symbol error and how do I fix it? http://stackoverflow.com/questions/12573816/what-is-an-undefined-reference-unresolved-external-symbol-error-and-how-do-i-fix a in a.cpp . Now b.cpp declared that symbol and used it. Before linking it simply assumes that that symbol was defined somewhere..
Why do I need strand per connection when using boost::asio? http://stackoverflow.com/questions/12794107/why-do-i-need-strand-per-connection-when-using-boostasio and composed operations such as boost asio async_write . Before explaining the details lets first cover the thread safety model..
Which iomanip manipulators are 'sticky'? http://stackoverflow.com/questions/1532640/which-iomanip-manipulators-are-sticky flags return bracket.m_str int main std cout 5.34 n Before PutSquareBracket 5.34 n Temp change settings. 5.34 n After..
How to handle a ctrl-break signal in a command line interface http://stackoverflow.com/questions/181413/how-to-handle-a-ctrl-break-signal-in-a-command-line-interface to handle a ctrl break signal in a command line interface Before I begin I want to clarify that this is not a command line tool..
Looking for C++ STL-like vector class but using stack storage http://stackoverflow.com/questions/354442/looking-for-c-stl-like-vector-class-but-using-stack-storage for C STL like vector class but using stack storage Before I write my own I will ask all y'all. I'm looking for a C class..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points relation between Undefined Behaviour and Sequence Points Before I get into that you must know the difference s between Undefined..
Operator Precedence vs Order of Evaluation http://stackoverflow.com/questions/5473107/operator-precedence-vs-order-of-evaluation statements and all three expressions in a for statement. Before a function is entered in a function call. The order in which..
Tutorial for Iphone OpenCV on shape recognising http://stackoverflow.com/questions/5738792/tutorial-for-iphone-opencv-on-shape-recognising c opencv image processing share improve this question Before jumping on iPhone development with OpenCV make sure you master..
Guaranteed lifetime of temporary in C++? http://stackoverflow.com/questions/584824/guaranteed-lifetime-of-temporary-in-c for the temporary StringBuffer object get called Is it Before the call to GetString After GetString returns Compiler dependent..
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 Update C 11 introduced a uniform initialization syntax . Before this up until C 03 doing B obj default initalized B obj declares..
Why do I need to use typedef typename in g++ but not VS? http://stackoverflow.com/questions/642229/why-do-i-need-to-use-typedef-typename-in-g-but-not-vs the typename keyword is required. Why is this necessary Before substituing the actual KEY and VALUE types the compiler cannot..
How can I create directory tree in C++/Linux? http://stackoverflow.com/questions/675039/how-can-i-create-directory-tree-in-c-linux Stress test with parallel running of mkpath function. Before the EEXIST test code would fail. With the EEXIST test code does..
C++ random float number generation http://stackoverflow.com/questions/686353/c-random-float-number-generation often not be sufficient if you need truly random numbers. Before calling rand you must first seed the random number generator..
Why would one replace default new and delete operators? http://stackoverflow.com/questions/7149461/why-would-one-replace-default-new-and-delete-operators the intricacies involved . To Collect Usage Statistics Before thinking of replacing new and delete for improving efficiency..
“string could not resolved” error in eclipse for C++ http://stackoverflow.com/questions/7905025/string-could-not-resolved-error-in-eclipse-for-c value click Apply Compile your project Detailed fix Before proceeding check if your toolchain is properly installed. Switch..
http://stackoverflow.com/questions/8020113/c-include-guards prevent that but that means your #include s are half done. Before saying how to fix this you should know another thing. If you..
How to open an std::fstream (ofstream or ifstream) with a unicode filename? http://stackoverflow.com/questions/821873/how-to-open-an-stdfstream-ofstream-or-ifstream-with-a-unicode-filename is getting an ofstream instance from a Unicode filename. Before I hack up my own solution is there a preferred route here Especially..
Will my iPhone app take a performance hit if I use Objective-C for low level code? http://stackoverflow.com/questions/926728/will-my-iphone-app-take-a-performance-hit-if-i-use-objective-c-for-low-level-cod How much faster Threading polymorphism sorting etc. Before I go on a quest to build a project with duplicate object models..
Not receiving callbacks from the Java Access Bridge http://stackoverflow.com/questions/1161142/not-receiving-callbacks-from-the-java-access-bridge can push the 'hello' message back to this hidden dialog BEFORE you use it. In the simple MFC dialog case it meant calling initializeAccessBridge..
Performance difference between ++iterator and iterator++? http://stackoverflow.com/questions/1303899/performance-difference-between-iterator-and-iterator Postincrement must return the value the iterator had BEFORE it was incrementing so that previous value needs to be copied..
std::condition_variable::notify_one() called several times without context switching http://stackoverflow.com/questions/15085823/stdcondition-variablenotify-one-called-several-times-without-context-switc notify_one has notified waiting thread about wake up but BEFORE this waiting thread has received time slot form the kernel scheduler..
Who deletes the memory allocated during a “new” operation which has exception in constructor? http://stackoverflow.com/questions/1674980/who-deletes-the-memory-allocated-during-a-new-operation-which-has-exception-in that the conrol enters the memory allocation routine BEFORE it hits the constructor. This on the MSDN website seems to confirm..
Symbol not found when using template defined in a library http://stackoverflow.com/questions/18543980/symbol-not-found-when-using-template-defined-in-a-library and with templates put #include file.cpp at the bottom BEFORE the closing header guard. that way you can include header files..
Managing destructors of managed (C#) and unmanaged (C++) objects http://stackoverflow.com/questions/1943830/managing-destructors-of-managed-c-and-unmanaged-c-objects the managed side the unmanaged dll is deleted from memory BEFORE any managed object. Thus when the managed object's destructor..
How to write a correct Hash Table destructor in c++ http://stackoverflow.com/questions/20037721/how-to-write-a-correct-hash-table-destructor-in-c it else leak it What you need to do is do the conditional BEFORE the new. if contains key true use the existing entry. ... return..
http://stackoverflow.com/questions/3046747/selective-iterator it ' ' end str.end Note that std string insert inserts BEFORE the iterator passed and returns an iterator to the newly inserted..
error LNK2019: unresolved external symbol _main referenced in function ___tmainCRTStartup http://stackoverflow.com/questions/4845410/error-lnk2019-unresolved-external-symbol-main-referenced-in-function-tmainc no current item return data current_index Adds an item BEFORE the current index void sequence insert const value_type entry..
Handle arbitrary length integers in C++ http://stackoverflow.com/questions/8146938/handle-arbitrary-length-integers-in-c you don't also put this line #define TTMATH_DONT_USE_WCHAR BEFORE this line #include ttmath ttmath.h i was struggling with this..
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