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c++ Programming Glossary: onlyhttp://stackoverflow.com/questions/236129/how-to-split-a-string-in-c another way to extract tokens from an input string relying only on standard library facilities. It's an example of the power..
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 say that profilers give you this information but that is only true if they sample the entire call stack. Call graphs don't.. in the presence of recursion. They will also say it only works on toy programs when actually it works on any program.. is small it doesn't tell us accurately what the cost is only that it is big enough to be worth fixing. Yet another way to..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three I will not go into the details of exception safety here. I only mentioned exceptions to make the following point Writing classes.. manage multiple resources in a single class this will only lead to pain. In that case remember the rule of three If you..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points defined 2 Furthermore the prior value shall be accessed only to determine the value to be stored. What does it mean It means..
http://stackoverflow.com/questions/4421706/operator-overloading famous Copy And Swap FAQ so I'll skip most of it here only listing the perfect assignment operator for reference X X operator.. Output Operators The stream operators among the most commonly overloaded operators are binary infix operators for which the.. operator manually setting the stream ™s state is only necessary when the reading itself succeeded but the result is..
Why can templates only be implemented in the header file? http://stackoverflow.com/questions/495021/why-can-templates-only-be-implemented-in-the-header-file can templates only be implemented in the header file Quote from The C standard.. from The C standard library a tutorial and handbook The only portable way of using templates at the moment is to implement.. template class Foo int template class Foo float You will only be able to use Foo with int or float If my explanation isn't..
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 got a member template typename U union_cast U that should only be instantiated for types that could actually be in the union... separating them. t x f The syntax allows typename only before qualified names it is therefor taken as granted that.. f int call a function template Template names can not only occur after a but also after a or . in a class member access...
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 the last thing popped off. It's like the hotel decides to only rent out rooms sequentially and you can't check out until everyone.. I certainly have many times. And worse the problem often only surfaces when memory is detected to be corrupt billions of nanoseconds..
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 is implementation defined and language dependent. Only where the object layout strategies of two language implementations..
http://stackoverflow.com/questions/1461432/what-is-array-decaying const T const array void by_reference const T array U Only the last the reference example will give proper sizeof info...
http://stackoverflow.com/questions/1604968/what-does-this-c-code-mean of the next bit field at an allocation unit boundary. Only when declaring an unnamed bit field may the value of the constant..
When should I write the keyword 'inline' for a function/method? http://stackoverflow.com/questions/1759300/when-should-i-write-the-keyword-inline-for-a-function-method I write the keyword 'inline' for a function method in C Only when you want the function to be defined in a header. More exactly..
How does C compute sin() and other math functions? http://stackoverflow.com/questions/2284860/how-does-c-compute-sin-and-other-math-functions somewhere in the appropriate subdirectory of sysdeps . Only one of these directories seems to include an implementation..
Purpose of Unions in C and C++ http://stackoverflow.com/questions/2310483/purpose-of-unions-in-c-and-c at most one active member at each moment of program time. Only the active member can be read. By writing into other member..
Does a const reference prolong the life of a temporary? http://stackoverflow.com/questions/2784262/does-a-const-reference-prolong-the-life-of-a-temporary const reference share improve this question Only local const references prolong the lifespan. The standard specifies..
Generate random numbers uniformly over an entire range http://stackoverflow.com/questions/288739/generate-random-numbers-uniformly-over-an-entire-range in the interval 0 1 stretch this to the required range. Only when max min 1 gets close to RAND_MAX you need a BigRand function..
What are some of the “best” cross-platform C++ UI toolkits today? http://stackoverflow.com/questions/366043/what-are-some-of-the-best-cross-platform-c-ui-toolkits-today JUCE. Free for non commercial use and cross platform. Only problem is that the development is controlled by one person..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring buffer where a std wstring is not On Linux Yes. On Windows Only special characters available for the current locale of the Windows..
C/C++: switch for non-integers http://stackoverflow.com/questions/4165131/c-c-switch-for-non-integers there are some more usage possibilities have a look. NOTE Only tested with g . Update C 11 Lambdas and initializier list make..
Thou shalt not inherit from std::vector http://stackoverflow.com/questions/4353203/thou-shalt-not-inherit-from-stdvector I would suggest doing that only if it is really necessary. Only if you can't do that with free functions e.g. should keep some..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c to x . The former is a pointer the latter an array. Only when the context triggers array to pointer decay can x and x..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers details are now in the pretty_print namespace. Only the global stream operators and the pretty_print_array wrapper..
C++11 rvalues and move semantics confusion http://stackoverflow.com/questions/4986673/c11-rvalues-and-move-semantics-confusion it will use vector's move constructor to do the return. Only if RVO is not performed and if the returned type did not have..
Subclass/inherit standard containers? http://stackoverflow.com/questions/6806173/subclass-inherit-standard-containers Hierarchies shouldn't be deep almost always two levels. Only use more than two when you have different dynamic categories..
C/C++: Array size at run time w/o dynamic allocation is allowed? http://stackoverflow.com/questions/737240/c-c-array-size-at-run-time-w-o-dynamic-allocation-is-allowed Program p. 261 states under Common Programming Error 4.5 Only constants can be used to declare the size of automatic and static..
http://stackoverflow.com/questions/7908248/in-a-templated-derived-class-why-do-i-need-to-qualify-base-class-member-names-w Base0 but an incomplete forward declared base class Base . Only for a known type T the template class specialisations of a class..
Is it safe to use -1 to set all bits to true? http://stackoverflow.com/questions/809227/is-it-safe-to-use-1-to-set-all-bits-to-true because you will have to have the right operand type. Only then you will get the most high value of an unsigned type. For..
Difference between private, public, and protected inheritance in C++ http://stackoverflow.com/questions/860339/difference-between-private-public-and-protected-inheritance-in-c of Base is also aware that Base contains publicMember. Only the children and their children are aware that Base contains..
How to use OpenCV to remove non text areas from a business card? [closed] http://stackoverflow.com/questions/10255013/how-to-use-opencv-to-remove-non-text-areas-from-a-business-card mask monochrome.png eroded.png you now have an image with ONLY the logo and no text use this image to remove the logo imagemagick..
http://stackoverflow.com/questions/11246423/rand-generating-same-numbers Generated i.e. mathematically generated random number is ONLY pseudo random. Pseudo random means that while the outputs from..
overload operator<< within a class in c++ http://stackoverflow.com/questions/1200475/overload-operator-within-a-class-in-c in the class. How do I overload the operator for my_struct ONLY within the class Edit I will want to use the overloaded operator.. question How do I overload the operator for my_struct ONLY within the class Define it as static std ostream operator std..
http://stackoverflow.com/questions/1455458/c-struct-alignment-question stdio.h #include arpa inet.h struct packed_with_bit_fields ONLY FOR COMPARISON unsigned int a 3 unsigned int b 1 unsigned int.. 16 unsigned short padding 13 __attribute__ packed USED ONLY TO COMPARE IMPLEMENTATIONS struct unpacked THIS IS THE EXAMPLE..
http://stackoverflow.com/questions/15361460/error-c2512-stdbasic-ostream-elem-traits-no-appropriate-default-constr this question because I'm a bit helpless this error occurs ONLY with Visual Studio GCC compiles it without errors or even warnings...
Downloading and integrating Qt5 with Visual Studio 2012 http://stackoverflow.com/questions/15826893/downloading-and-integrating-qt5-with-visual-studio-2012 feature EVEN WITH AUTO SANDBOXING TURNED OFF. THE ONLY WAY TO OVERCOME THIS ISSUE IS TO COMPLETELY UNINSTALL AVAST..
http://stackoverflow.com/questions/15932767/missing-qrc-mimetypes-cpp-while-attempting-to-build-qt-on-windows-7-32-bit-bu feature EVEN WITH AUTO SANDBOXING TURNED OFF. THE ONLY WAY TO OVERCOME THIS ISSUE IS TO COMPLETELY UNINSTALL AVAST..
c++ - length of array inside class function [duplicate] http://stackoverflow.com/questions/16618221/c-length-of-array-inside-class-function returns a result based on the declaration of the variable ONLY and not the actual size at runtime. If your variable is delcared..
The best cross platform (portable) arbitrary precision math library http://stackoverflow.com/questions/2568446/the-best-cross-platform-portable-arbitrary-precision-math-library initialization object creation. The precision should ONLY be constrained by the available resources of the system. It..
Why use #ifndef CLASS_H and #define CLASS_H in .h file but not in .cpp? http://stackoverflow.com/questions/3246803/why-use-ifndef-class-h-and-define-class-h-in-h-file-but-not-in-cpp can call functions and use variables in class.cpp IF AND ONLY IF THEY ARE DECLARED IN class.h . I hope this was helpful. ..
How to erase elements from boost::ptr_vector http://stackoverflow.com/questions/356002/how-to-erase-elements-from-boostptr-vector two object should behave in exactly the same way. The ONLY difference is inserting values which for y are pointers. Y take..
Creating a transparent window in C++ Win32 http://stackoverflow.com/questions/3970066/creating-a-transparent-window-in-c-win32 be a very simple Win32 C app who's sole purpose it to ONLY display a semi transparent PNG. The window shouldn't have any..
Operator overloading : member function vs. non-member function? http://stackoverflow.com/questions/4622330/operator-overloading-member-function-vs-non-member-function IF it needs to access private members. Make it friend ONLY when it needs to access private members. Otherwise simply make..
http://stackoverflow.com/questions/6437538/vs2010-static-linking-issue
C++ STL vector vs array in the real world http://stackoverflow.com/questions/6462985/c-stl-vector-vs-array-in-the-real-world free these resources. When an exception goes unhandled the ONLY things that are gaurenteed to be called are the destructors..
Is there a standard #include convention for C++? http://stackoverflow.com/questions/691079/is-there-a-standard-include-convention-for-c I've worked on projects where the Implementation .cpp file ONLY includes the corresponding Definition .hpp file and nothing..
why is this so much slower in c++? http://stackoverflow.com/questions/7809473/why-is-this-so-much-slower-in-c a window it's now pretty much the same as the program with ONLY the method in only it STILL takes about 5 minutes to run. Now..
Executing cv::warpPerspective for a fake deskewing on a set of cv::Point http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint . Important note getAffine transform needs and expects ONLY 3 points and the result matrix is 2 by 3 instead of 3 by 3...
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