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c++ Programming Glossary: levelsOpenCV C++/Obj-C: Advanced square detection http://stackoverflow.com/questions/10533233/opencv-c-obj-c-advanced-square-detection 0 mixChannels blurred 1 gray0 1 ch 1 try several threshold levels const int threshold_level 2 for int l 0 l threshold_level l..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code complex memory hierarchies registers typically several levels of cache within the CPU chip L1 L2 L3 instruction caches ..... related data close to eachother. Caching happens on many levels not just in the CPU. For example when you read from RAM typically..
C++ typedef interpretation of const pointers http://stackoverflow.com/questions/2253738/c-typedef-interpretation-of-const-pointers
Can anyone quantify performance differences between C++ and Java? http://stackoverflow.com/questions/313446/can-anyone-quantify-performance-differences-between-c-and-java be more than a subjective questions. Languages with higher levels of abstraction frequently pay a performance penalty. We would..
Why can't I have a non-integral static const member in a class? http://stackoverflow.com/questions/370283/why-cant-i-have-a-non-integral-static-const-member-in-a-class but not constant double values. At higher optimization levels e.g. O1 it inlines constant doubles. Thus the following code..
Best compiler warning level for C/C++ compilers? http://stackoverflow.com/questions/399850/best-compiler-warning-level-for-c-c-compilers or to say I really mean 'if x y ' What are your favorite levels for the different compilers such as Sun CC aCC HPUX Visual Studio..
http://stackoverflow.com/questions/500493/c-equivalent-of-instanceof or not. Note that this approach doesn't support multiple levels of inheritance so if you're not careful you might end with code..
Flags to enable thorough and verbose g++ warnings http://stackoverflow.com/questions/5088460/flags-to-enable-thorough-and-verbose-g-warnings positives. My own test code compiled cleanly under all 3 levels. Wswitch enum isn't behavior that I want. I don't want to handle..
http://stackoverflow.com/questions/5416414/signed-unsigned-comparisons bit pattern if there is no truncation . EDIT2 MSVC warning levels What is warned about on the different warning levels of MSVC.. levels What is warned about on the different warning levels of MSVC is of course choices made by the developers. As I see..
How can I use Standard Library (STL) classes in my dll interface or ABI? http://stackoverflow.com/questions/5661738/how-can-i-use-standard-library-stl-classes-in-my-dll-interface-or-abi can include different versions or even different patch levels of the same compiler. How can I use stl classes in my dll interface.. implementation . In fact different versions or even patch levels of the same compiler may change these implementation details...
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c can have pointers to pointers to pointers offering extra levels of indirection. Whereas references only offer one level of indirection...
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..
Dual emission of constructor symbols http://stackoverflow.com/questions/6921295/dual-emission-of-constructor-symbols two are are identical GCC will on sufficient optimization levels actually alias the symbols to the same code for both. share..
Uses for multiple levels of pointer dereferences? http://stackoverflow.com/questions/758673/uses-for-multiple-levels-of-pointer-dereferences for multiple levels of pointer dereferences When does using pointers in any language..
Square detection doesn't find squares http://stackoverflow.com/questions/7731742/square-detection-doesnt-find-squares but the main ones are Decrease the number of threshold levels to 2 . In the beginning of findSquares dilate the image to detect.. c 0 mixChannels timg 1 gray0 1 ch 1 try several threshold levels for int l 0 l N l hack use Canny instead of zero threshold..
OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection http://stackoverflow.com/questions/8667818/opencv-c-obj-c-detecting-a-sheet-of-paper-square-detection 0 mixChannels blurred 1 gray0 1 ch 1 try several threshold levels const int threshold_level 2 for int l 0 l threshold_level l..
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