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c++ Programming Glossary: resultsthrowing exceptions out of a destructor http://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor say never throw an exception out of a destructor doing so results in undefined behavior. Stroustrup makes the point that the vector.. okay. So my question is this if throwing from a destructor results in undefined behavior how do you handle errors that occur during..
Why does an overridden function in the derived class hide other overloads of the base class? http://stackoverflow.com/questions/1628768/why-does-an-overridden-function-in-the-derived-class-hide-other-overloads-of-the rules could be complicated at times and often lead to results that might be perceived as illogical by an unprepared user... result in a rather drastic shift in overload resolution results. For example let's say the base class B has a member function..
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..
In C++, what is a virtual base class? http://stackoverflow.com/questions/21558/in-c-what-is-a-virtual-base-class A class D public B public C The above class hierarchy results in the dreaded diamond which looks like this A B C D An instance..
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior stored in read only memory so the first assignment attempt results in a core dump . This is exactly the problem with undefined.. from ignoring the situation completely with unpredictable results to behaving during translation or program execution in a documented..
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 of ambiguity here. Although dereferencing a null pointer results in undefined behavior is mentioned in notes in both §1.9 4 and.. behavior view. Now we consider the question. Yes a results in undefined behavior. In fact if this is null then regardless.. use the weak interpretation the call is well defined. E1 results in an lvalue the static function is resolved E1 is discarded..
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring it usually does but will give you interesting read wrong results. Following KeithB's point in the comments here's a way to do..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward A so the target type for the static cast is A . The cast results in an rvalue expression which can no longer be passed to an..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points from ignoring the situation completely with unpredictable results to behaving during translation or program execution in a documented..
http://stackoverflow.com/questions/4421706/operator-overloading or struct or union type otherwise their implementation results in a compile time error. The unary address of operator should..
Why do I get “unresolved external symbol” errors when using templates? http://stackoverflow.com/questions/456713/why-do-i-get-unresolved-external-symbol-errors-when-using-templates won't generate the code required for the function. This results in the unresolved external symbol. The solutions available for..
How do I tokenize a string in C++? http://stackoverflow.com/questions/53849/how-do-i-tokenize-a-string-in-c split method String str The quick brown fox String results str.split Is there an easy way to do this in C c string split..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome house is no longer there and goes to visit it with failed results see also the part about an invalid reference below . var h THouse..
How can I get a list of files in a directory using C or C++? http://stackoverflow.com/questions/612097/how-can-i-get-a-list-of-files-in-a-directory-using-c-or-c I'm not allowed to execute the 'ls' command and parse the results from within my program. c c file directory share improve..
What is the difference between char a[] = “string”; and char *p = “string”; http://stackoverflow.com/questions/9460260/what-is-the-difference-between-char-a-string-and-char-p-string string The title has been modified to yield better search results when users search using google or otherwise. Please Do not modify..
Algorithm improvement for Coca-Cola can shape recognition http://stackoverflow.com/questions/10168686/algorithm-improvement-for-coca-cola-can-shape-recognition relative to your original template . In theory at least... Results Now while this approach worked in the basic cases it was severely..
Copy a file in an sane, safe and efficient way http://stackoverflow.com/questions/10195343/copy-a-file-in-an-sane-safe-and-efficient-way program redirects output of program and append to file Results CPU TIME used Program Description UNBUFFERED BUFFERED ANSI..
Memory management patterns in C++ http://stackoverflow.com/questions/14539624/memory-management-patterns-in-c be useful. For example yesterday I had to create a class Results that was a container for a few objects and a collection std.. to them again What should the getters defined on my Results class return i.e. values references or smart pointers Of course.. smart pointers. 4 What should the getters defined on my Results class return i.e. values references or smart pointers Same answer..
http://stackoverflow.com/questions/1539385/main-in-c-c-java-c-sharp Hello World ... javac Test.java ... java Test Results in Hello World being printed to the console. share improve..
Marshal C++ struct array into C# http://stackoverflow.com/questions/188299/marshal-c-struct-array-into-c-sharp data In C I would just do something like this LPRData Results Results LPRData malloc MAXRESULTS sizeof LPRData GetData Results.. In C I would just do something like this LPRData Results Results LPRData malloc MAXRESULTS sizeof LPRData GetData Results And.. Results LPRData malloc MAXRESULTS sizeof LPRData GetData Results And it would work just fine but in C# I can't seem to get it..
Does the restrict keyword provide significant benefits in gcc / g++ http://stackoverflow.com/questions/1965487/does-the-restrict-keyword-provide-significant-benefits-in-gcc-g for j 0 j 10000 j transform dstdata srcdata matrix 10000 Results on my 2 Ghz Core Duo nils@doofnase ~ gcc O3 test.c nils@doofnase..
Optimizing away a “while(1);” in C++0x http://stackoverflow.com/questions/3592557/optimizing-away-a-while1-in-c0x x complex_io_operation cout Results endl cout x endl Here it would be faster for one thread to do..
Printing double without losing precision http://stackoverflow.com/questions/4738768/printing-double-without-losing-precision std setprecision std numeric_limits double digits v n Results in 1.000000000000000e 02 1.0000000000000002e 02 1.00000000000000019428902930940239457413554200000000000e..
How to get IOStream to perform better? http://stackoverflow.com/questions/5166263/how-to-get-iostream-to-perform-better parameters C did not yield any improvement. Results by others @Irfy on g 4.7.2 2ubuntu1 O3 virtualized Ubuntu 11.10..
How to reuse an ostringstream? http://stackoverflow.com/questions/624260/how-to-reuse-an-ostringstream whatever is in the output buffer currently instead. Results are like this std ostringstream s s hello s.seekp 0 s b assert..
http://stackoverflow.com/questions/7352099/stdstring-to-char char or char data type. std string str string char chr str Results in œerror cannot convert ˜std string to ˜char ... strong . What..
Benchmarking (python vs. c++ using BLAS) and (numpy) http://stackoverflow.com/questions/7596612/benchmarking-python-vs-c-using-blas-and-numpy double start.tv_sec factor double start.tv_usec factor Results The result is shown in the plot below Questions Do you think..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle for zeros that use less power and produce less heat. More Results Intel Core i7 920 @ 3.5 GHz Windows 7 Ultimate x64 Visual Studio..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops start CLOCKS_PER_SEC endl system pause return 0 Benchmark Results EDIT Results on an actual Core 2 architecture machine 2 x Intel.. endl system pause return 0 Benchmark Results EDIT Results on an actual Core 2 architecture machine 2 x Intel Xeon X5482..
http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on questions regarding robust detection algorithms. Quick Results Some sample images all the images apart from yours are downloaded..
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