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c++ Programming Glossary: wiseWhy is my program slow when looping over exactly 8192 elements? http://stackoverflow.com/questions/12264970/why-is-my-program-slow-when-looping-over-exactly-8192-elements over a 2D array You are iterating the matrix column wise instead of row wise. To solve this problem you should interchange.. You are iterating the matrix column wise instead of row wise. To solve this problem you should interchange the two loops...
C++ Which is faster: Stack allocation or Heap allocation http://stackoverflow.com/questions/161053/c-which-is-faster-stack-allocation-or-heap-allocation it wasn't necessary because they are the same performance wise. I was always under the impression that growing the stack was..
When is overloading pass by reference (l-value and r-value) preferred to pass-by-value? http://stackoverflow.com/questions/18303287/when-is-overloading-pass-by-reference-l-value-and-r-value-preferred-to-pass-by was sufficient. That would be a disaster performance wise. Update Here is a HelloWorld that you should be able to run..
When to use inline function and when not to use it? http://stackoverflow.com/questions/1932311/when-to-use-inline-function-and-when-not-to-use-it writing very very small functions . About performance the wise approach is as always to profile the application then eventually..
Unmangling the result of std::type_info::name http://stackoverflow.com/questions/281818/unmangling-the-result-of-stdtype-infoname specified as NULL. Do NOT allocate it on the stack. It's wise to check that status as well. I failed to find HAVE_CXA_DEMANGLE..
http://stackoverflow.com/questions/2901694/programatically-detect-number-of-physical-processors-cores-or-if-hyper-threading vs. 2 CPU cores is a very different thing performance wise. I struggled with this until I pieced together the solution..
When do we have to use copy constructors? http://stackoverflow.com/questions/3278625/when-do-we-have-to-use-copy-constructors The copy constructor generated by the compiler does member wise copying. Sometimes that is not sufficient. For example class.. stored str Class ~Class delete stored in this case member wise copying of stored member will not duplicate the buffer only..
Why does C++ support memberwise assignment of arrays within structs, but not generally? http://stackoverflow.com/questions/3437110/why-does-c-support-memberwise-assignment-of-arrays-within-structs-but-not-gen does C support memberwise assignment of arrays within structs but not generally I understand.. within structs but not generally I understand that memberwise assignment of arrays is not supported such that the following.. myStruct struct2 struct2 struct1 The array num 3 is member wise assigned from its instance in struct1 into its instance in struct2..
Double dispatch/multimethods in C++ http://stackoverflow.com/questions/429849/double-dispatch-multimethods-in-c the BaseClass type. What is the most efficient performance wise way to accomplish this After googling around for a while I found..
Use of typename keyword with template function parameters http://stackoverflow.com/questions/4347730/use-of-typename-keyword-with-template-function-parameters a variable of type void that is initialized by a bit wise AND expression. The entire declaration would be templated. Of..
http://stackoverflow.com/questions/6103314/visual-studio-debug-iterators to all of their iterators. This is expensive performance wise but performance is not critical in debug mode and this enables..
When to use std::forward to forward arguments? http://stackoverflow.com/questions/7257144/when-to-use-stdforward-to-forward-arguments i.e. forwarding to two functions at the same time is it wise to use std forward Won't std forward convert the same thing..
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 on the iPhone or other portable hardware you have to make wise algorithmic decisions to make your code fast. But even great..
Is there any overhead to declaring a variable within a loop? (C++) http://stackoverflow.com/questions/982963/is-there-any-overhead-to-declaring-a-variable-within-a-loop-c i 0 int var while i 100 var 4 i or are they the same speedwise and efficiency wise c loops variable declaration share improve.. 100 var 4 i or are they the same speedwise and efficiency wise c loops variable declaration share improve this question..
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