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c++ Programming Glossary: hisSystem(“pause”); - Why is it wrong? http://stackoverflow.com/questions/1107705/systempause-why-is-it-wrong really not that bad after all What are your thoughts on this subject c security share improve this question It's frowned.. your thoughts on this subject c security share improve this question It's frowned upon because it's a platform specific.. and so the new user doesn't get to see the output of his new program. Bodging in System pause runs the Windows command..
Use of 'const' for function parameters http://stackoverflow.com/questions/117293/use-of-const-for-function-parameters I opt to use it extensively including parameters but in this case I wonder if it's worthwhile I was also surprised to learn.. void func const int n const long l Is there a reason for this It seems a little unusual to me. c const share improve this.. It seems a little unusual to me. c const share improve this question The reason is that const for the parameter only applies..
throwing exceptions out of a destructor http://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor explicitly invokes the destructor for every element. This implies that if an element destructor throws the vector destruction.. if an element destructor throws from Appendix E3.2 . This article seems to say otherwise that throwing destructors are.. destructors are more or less okay. So my question is this if throwing from a destructor results in undefined behavior..
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration of both eludes me. c c terminology c faq share improve this question A declaration introduces an identifier and describes.. A definition actually instantiates implements this identifier. It's what the linker needs in order to link references..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code c performance caching memory cpu cache share improve this question Preliminaries Modern computer architectures feature.. so forth. The basic mantra is fast memory is expensive . This is the core reason for the advanced caching we see today. Caching.. is leaving the CPU die e.g. accessing RAM or higher . This will only get worse over time. The increase in processor frequency..
Where can I learn more about C++0x? [closed] http://stackoverflow.com/questions/200237/where-can-i-learn-more-about-c0x the subject yet c c 0x reference manual share improve this question ISO C committee Bjarne Stroustrup Especially his.. question ISO C committee Bjarne Stroustrup Especially his C 0x FAQ The Design of C 0x pdf from C C Users Journal May 2005..
Why pure virtual function is initialized by 0? http://stackoverflow.com/questions/2156634/why-pure-virtual-function-is-initialized-by-0 it is always assigned to 0. What I understand is that this is to initialize the vtable entry for this function to NULL.. is that this is to initialize the vtable entry for this function to NULL and any other value here results in a compile.. results in a compile time error. Please tell me whether this understanding is correct or not. c abstract class pure virtual..
Generate random numbers following a normal distribution in C/C++ http://stackoverflow.com/questions/2325472/generate-random-numbers-following-a-normal-distribution-in-c-c want to use any of Boost. I know that Knuth talks about this at length but I don't have his books at hand right now. c c.. that Knuth talks about this at length but I don't have his books at hand right now. c c random distribution normal distribution.. c random distribution normal distribution share improve this question The Box Muller transform is what is commonly used...
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring std ios end go to the end length t.tellg report location this is the length t.seekg 0 std ios beg go back to the beginning.. Updated on Dec 5 2012 Tyler McHenry pointed out that his initial clever suggestion may be inefficient in some cases and.. the above code insane coder To Tyler McHenry if you found his answer and later update as beneficial as I did please up vote..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers containers Please take note of the updates at the end of this post. Update I have created a public project on GitHub for this.. Update I have created a public project on GitHub for this library I would like to have a single template that once and.. operator . In pseudo code I'm looking for something like this template container C class T String delim String open String..
http://stackoverflow.com/questions/5450159/type-erasure-techniques to find some crazy technique that somebody thought of in his her darkest hour. The first and most obvious and commonly taken.. interface based class hierarchy. Many Boost libraries do this for example Boost.Any does this to hide your type and Boost.Shared_ptr.. Many Boost libraries do this for example Boost.Any does this to hide your type and Boost.Shared_ptr does this to hide the..
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 drill like scenarios. c c pointers share improve this question Pointers is a concept that for many can be confusing.. these diagrams. Disclaimer For all intents and purposes this explanation and the example memory layouts are vastly simplified... Let's assume the THouse class used below looks like this type THouse class private FName array 0..9 of Char public constructor..
How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array? http://stackoverflow.com/questions/6114067/how-to-emulate-c-array-initialization-int-arr-e1-e2-e3-behaviou e1 e2 e3 &hellip &rdquo behaviour with std array Note This question is about not having to specify the number of elements.. and still allow nested types to be directly initialized. This question discusses the uses left for a C array like int arr.. discusses the uses left for a C array like int arr 20 . On his answer @James Kanze shows one of the last strongholds of C arrays..
Why artificially limit your code to C? [closed] http://stackoverflow.com/questions/649789/why-artificially-limit-your-code-to-c artificially limit your code to C closed This is prompted by a an answer I gave to a current question which.. just as efficient as C or more so or less so Please note This is not intended to be argumentative I am genuinely interested.. the choice of language. Edit It has been suggested that this is a duplicate but I don't think it is. To clarify I'm interested..
make_unique and perfect forwarding http://stackoverflow.com/questions/7038357/make-unique-and-perfect-forwarding nicer auto p std make_unique SomeUserDefinedType 1 2 3 This hides the new nicely and only mentions the type once. Anyway.. templates unique ptr perfect forwarding share improve this question Herb Sutter chair of the C standardization committee.. Sutter chair of the C standardization committee writes on his blog That C 11 doesn ™t include make_unique is partly an oversight..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used How do you implement a Singleton correctly My hope for this article is that we can collect together in a single place rather.. So get the ball rolling I will hold my hand up and say this is what I use but probably has problems. I like Scott Myers.. problems. I like Scott Myers handling of the subject in his books Effective C Good Situations to use Singletons not many..
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 5570000 Thanks in advance Edit I should note that I tried this both under OS X 10.6.8 and Linux 2.6.32 RHEL 6.2 . The former.. a macbook pro the latter is a very beefy server not that this is too pertinent. Edit 2 Removed this edit as no longer applicable.. server not that this is too pertinent. Edit 2 Removed this edit as no longer applicable for i in 1..5 do echo Test run..
Best resources for converting C/C++ dll headers to Delphi? http://stackoverflow.com/questions/100596/best-resources-for-converting-c-c-dll-headers-to-delphi the Delphi IDE which aids in converting C C code to Delphi His other relevant articles on this topic include Using C Objects..
multivariate normal cdf in C, C++, or Fortran http://stackoverflow.com/questions/11109465/multivariate-normal-cdf-in-c-c-or-fortran implemented are derived from his algorithm and papers. His code can compute the CDF and expectation of the multivariate..
Is there a reason to not use Boost? [closed] http://stackoverflow.com/questions/1226206/is-there-a-reason-to-not-use-boost chose to not to use Boost I am not sure what to answer ... His whole point is none of the modern day C projects make use of..
debug websocket++ broadcast_server.cpp ('owner_less' is not a member of 'std') http://stackoverflow.com/questions/15423931/debug-websocket-broadcast-server-cpp-owner-less-is-not-a-member-of-std examples broadcast_server broadcast_server.cpp His simple print_server.cpp example compiles easily however I'm..
Performance of 32-bit integers in a 64-bit environment (C++) http://stackoverflow.com/questions/1750442/performance-of-32-bit-integers-in-a-64-bit-environment-c never exceed 10 000 which I'm storing in an unsigned int. His recommendation is to switch this to a size_t so that it expands..
Win32 API stack walk with MinGW/MSYS? http://stackoverflow.com/questions/3318564/win32-api-stack-walk-with-mingw-msys to support MinGW. http www.mr edd.co.uk code stack_trace His library uses dbghelp.dll however so you may get into some problems..
To throw or not to throw exceptions? http://stackoverflow.com/questions/3490153/to-throw-or-not-to-throw-exceptions exceptions just because I didn't know how to do it in C . His answer surprised me why in the hell would you want to throw..
Trailing underscores for member variables in C++ http://stackoverflow.com/questions/3650623/trailing-underscores-for-member-variables-in-c public members whenever he needs simple data structures. His methods always seem to be operations . I've also read somewhere..
Which is the fastest algorithm to find prime numbers? http://stackoverflow.com/questions/453793/which-is-the-fastest-algorithm-to-find-prime-numbers sieve is more efficient than the Sieve of Eratosthenes . His page has some benchmark information. share improve this answer..
Usage limitations during the DllMain Attach and Detach process http://stackoverflow.com/questions/5834508/usage-limitations-during-the-dllmain-attach-and-detach-process of mine has troubles during the DllMain Detach process. His bug seems not to appear in all cases but fairly often. While..
How can a variable be used when its definition is bypassed? http://stackoverflow.com/questions/8535731/how-can-a-variable-be-used-when-its-definition-is-bypassed around at a later time and set it on fire if he wanted to. His jump doesn't make the log magically disappear. share improve..
Why is operator% referred to as the “modulus” operator instead of the “remainder” operator? http://stackoverflow.com/questions/9284644/why-is-operator-referred-to-as-the-modulus-operator-instead-of-the-remainder sense. When you divide 1 by 10 you get 0 with 1 remaining. His argument however was that the modulus operator is supposed to..
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