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c++ Programming Glossary: tlIn which versions of the C++ standard does “(i+=10)+=10” have undefined behaviour? http://stackoverflow.com/questions/10655290/in-which-versions-of-the-c-standard-does-i-10-10-have-undefined-behaviou to my answer to What's the result of in C and C The subtlety here is that the default response seems to be yes whereas.. language lawyer c 03 share improve this question tl dr The sequence of the modifications and reads performed in..
cmath functions generating compiler error http://stackoverflow.com/questions/1216878/cmath-functions-generating-compiler-error Graph_lib our graphics facilities are in Graph_lib Point tl 100 100 to become top left corner of window Simple_window win.. 100 to become top left corner of window Simple_window win tl 600 400 Canvas make a simple window Polygon poly make a shape..
Is there an Non-Short circuited logical “and” in C++? http://stackoverflow.com/questions/1758608/is-there-an-non-short-circuited-logical-and-in-c an Non Short circuited logical &ldquo and&rdquo in C tl dr Is there a non short circuit logical AND in C similar to..
http://stackoverflow.com/questions/4705593/int-vs-const-int blindly using references instead of values can lead to subtle bugs. The reason is that when dealing with references you must.. Behaviour realm. Aliasing issues are also a source of subtle problems if const references are used instead of values. I've.. const P2d p x p.x y p.y return this struct Rect P2d tl br Rect const P2d tl const P2d br tl tl bt br Rect operator..
http://stackoverflow.com/questions/579887/how-expensive-is-rtti levels yet still allow them to act completely differently. From my understanding dynamic_cast uses RTTI so I was wondering.. actual resource usage in common implementations. I recently did a bunch of research into RTTI in GCC. tl dr RTTI in GCC.. I recently did a bunch of research into RTTI in GCC. tl dr RTTI in GCC uses negligible space and typeid a typeid b is..
Class construction with initial values http://stackoverflow.com/questions/7207884/class-construction-with-initial-values efficiency issues if done on a large scale or is it exactly the same c share improve this question The first way by.. and then overwriting it it will set their values directly to that value you give it or call the right constructor if.. you want to give some value rather than just have permantently the default value have a reference member. You must use initializer..
What is the cost of inheritance? http://stackoverflow.com/questions/7210412/what-is-the-cost-of-inheritance but no more than if they were in the derived class directly and you didn't inherit from anything. This does not take into.. virtual methods which do incur a small runtime cost. tl dr You shouldn't be worrying about it. share improve this answer..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python something wrong or if I'm misunderstanding something. tl dr version include the statement cin.sync_with_stdio false or.. 0 time_t start time NULL int sec int lps while cin getline cin input_line if cin.eof line_count sec int time NULL.. suggestion of using scanf into a char array instead of getline into a std string. Bingo This resulted in equivalent performance..
Cross-compilation for Raspberry Pi in GCC. Where to start? http://stackoverflow.com/questions/10973020/cross-compilation-for-raspberry-pi-in-gcc-where-to-start compilation for Raspberry Pi in GCC. Where to start TL DR Where can I find more information about building a GCC 4.7.0..
Can I partially specialize a template with a pattern like foo<T…, int, U…>? http://stackoverflow.com/questions/11073423/can-i-partially-specialize-a-template-with-a-pattern-like-foot-int-u I typename List struct element_impl template typename... TL int... IL typename T int I typename... TR int... IR struct element_impl.. TR int... IR struct element_impl I typelist pair TL IL ... pair T I pair TR IR ... typedef T type prog.cpp In instantiation..
Uses of a C++ Arithmetic Promotion Header http://stackoverflow.com/questions/2426330/uses-of-a-c-arithmetic-promotion-header complete control over how your objects are being converted TL DR What sorts of helper templates would you expect to find in..
Explicit specialization in non-namespace scope http://stackoverflow.com/questions/3052579/explicit-specialization-in-non-namespace-scope CConstraint virtual ~CConstraint template typename TL void Verify int position int constraints template void Verify.. free function namespace detail template typename TL void Verify int int template void Verify int int int template.. typename T class CConstraint ... template typename TL void Verify int position int constraints detail Verify TL position..
Why can't my C++ compiler deduce template argument for boost function? http://stackoverflow.com/questions/5871044/why-cant-my-c-compiler-deduce-template-argument-for-boost-function operator s are possible to overload and template. TL DR What you want isn't possible. share improve this answer..
Why can template instances not be deduced in `std::reference_wrapper`s? http://stackoverflow.com/questions/8513050/why-can-template-instances-not-be-deduced-in-stdreference-wrappers bottom here comes the normative text why this won't work. TL DR version No conversions allowed if the function parameter..
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