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c++ Programming Glossary: resultIs there a difference in C++ between copy initialization and direct initialization? http://stackoverflow.com/questions/1051379/is-there-a-difference-in-c-between-copy-initialization-and-direct-initializati direct copy How does it work and why does it output that result Direct initialization It first doesn't know anything about conversion...
http://stackoverflow.com/questions/1120140/csv-parser-in-c std istream str std vector std string result std string line std getline str line std stringstream lineStream.. std string cell while std getline lineStream cell ' ' result.push_back cell return result I would just create a class representing.. getline lineStream cell ' ' result.push_back cell return result I would just create a class representing a row. Then stream..
Why 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 sum sum with a similar but less extreme result. My first thought was that sorting brings the data into cache..
Most effective way for float and double comparison http://stackoverflow.com/questions/17333/most-effective-way-for-float-and-double-comparison using the builtin C operator for doubles produced correct results. Like I said it all depends on context and the expected size.. as 1.0 1.0. This is as long as you do not do things that result in fractions 4.0 3.0 or do not go outside of the size of an..
Best way to detect integer overflow in C/C++ http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overflow-in-c-c binary math knowledge. For addition any two operands will result in at most one bit more than the largest operand's highest one.. 32 b_bits 32 For multiplication any two operands will result in at most the sum of the bits of the operands. For example.. 32 Similarly you can estimate the maximum size of the result of a to the power of b like this bool exponentiation_is_safe..
When does invoking a member function on a null instance result in undefined behavior? http://stackoverflow.com/questions/2474018/when-does-invoking-a-member-function-on-a-null-instance-result-in-undefined-beha does invoking a member function on a null instance result in undefined behavior Consider the following code #include.. null is always said to be undefined behavior. Does a result in undefined behavior What about if both functions and x are.. null pointer share improve this question Both a and b result in undefined behavior. It's always undefined behavior to call..
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 you get with reinterpret_cast is that if you cast the result back to the original type you will get the exact same value...
http://stackoverflow.com/questions/356950/c-functors-and-their-uses on every element in the input sequence and stores the result to the output sequence std transform in.begin in.end out.begin..
What are all the common undefined behaviour that a C++ programmer should know about? [closed] http://stackoverflow.com/questions/367633/what-are-all-the-common-undefined-behaviour-that-a-c-programmer-should-know-ab initialized Performing pointer arithmetic that yields a result outside the boundaries either above or below of an array. Dereferencing.. destructions of objects with static storage duration The result of assigning to partially overlapping objects Recursively re..
http://stackoverflow.com/questions/4421706/operator-overloading only necessary when the reading itself succeeded but the result is not what would be expected. Function call operator The function.. X lhs const X rhs lhs rhs return lhs operator returns its result per reference while operator returns a copy of its result. Of.. result per reference while operator returns a copy of its result. Of course returning a reference is usually more efficient than..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c that both types can implicitly be converted to T and the result of this conversion is a pointer to the first element of the.. This conversion from array to pointer is trivial since the resulting pointer value is simply the address of the array. Note that.. the small box next to x but it could just as well be the result of a function returning a pointer or any other expression of..
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 named loadimg.exe . Type loadimg To execute the program. Result 4. Where to go from here Now that your OpenCV environment is..
function passed as template argument http://stackoverflow.com/questions/1174169/function-passed-as-template-argument void T int void doOperation int temp 0 T temp std cout Result is temp std endl int main doOperation add1 doOperation add2.. typename F void doOperation F f int temp 0 f temp std cout Result is temp std endl which can now be called as either doOperation..
How to make elements of vector unique? (remove non adjacent duplicates) http://stackoverflow.com/questions/1453333/how-to-make-elements-of-vector-unique-remove-non-adjacent-duplicates adjacent duplicates and maintaining the order of elements. Result would be 2 1 6 4 The solutions I tried are Inserting into a..
SFINAE to check for inherited member functions http://stackoverflow.com/questions/1966362/sfinae-to-check-for-inherited-member-functions
Which Typesafe Enum in C++ Are You Using? http://stackoverflow.com/questions/217549/which-typesafe-enum-in-c-are-you-using const return id right.id Usage class Dialog ... struct Result public TypesafeEnum static const Result CANCEL Cancel static.. Dialog ... struct Result public TypesafeEnum static const Result CANCEL Cancel static const Result OK Ok Result doModal ..... static const Result CANCEL Cancel static const Result OK Ok Result doModal ... const Dialog Result Dialog Result..
Simple example of threading in C++ http://stackoverflow.com/questions/266168/simple-example-of-threading-in-c function's parameters. Finally invoke it like so t1.join Result The entire code is this #include string #include iostream #include..
::std::vector::at() vs operator[] << surprising results!! 5 to 10 times slower/faster! http://stackoverflow.com/questions/3269809/stdvectorat-vs-operator-surprising-results-5-to-10-times-slower-f 1000000 int main __int64 freq start end diff_Result if QueryPerformanceFrequency LARGE_INTEGER freq throw Not supported.. vec.at i QueryPerformanceCounter LARGE_INTEGER end diff_Result end start freq printf Result t t u n n diff_Result printf Press.. LARGE_INTEGER end diff_Result end start freq printf Result t t u n n diff_Result printf Press any key to start _getch printf..
http://stackoverflow.com/questions/347358/inheriting-constructors int x class B public A int main void B b new B 5 delete b Result in these errors main.cpp In function ˜int main main.cpp 13 error..
boost::lexical_cast , conversion double to string c++ http://stackoverflow.com/questions/5016464/boostlexical-cast-conversion-double-to-string-c n 5 string number number boost lexical_cast string n Result number 5 I need number 5.00 c string boost share improve..
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