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c++ Programming Glossary: badSystem(“pause”); - Why is it wrong? http://stackoverflow.com/questions/1107705/systempause-why-is-it-wrong taught to use it Or on the flip side is it really not that bad after all What are your thoughts on this subject c security..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions was a good idea See what I wrote above. It wasn't such a bad idea a few years ago when C 0x was still a work in progress..
throwing exceptions out of a destructor http://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor iostream class Bad public ~Bad throw 1 int main try Bad bad catch ... std cout Print This std endl try Bad bad throw 2.. Bad bad catch ... std cout Print This std endl try Bad bad throw 2 catch ... std cout Never print this std endl This..
Why is “using namespace std;” considered bad practice? http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice is &ldquo using namespace std &rdquo considered bad practice I've been told by others on numerous occasions that.. However they would always be vague as to why this is a bad practice. Why is using namespace std considered bad Is it really.. is a bad practice. Why is using namespace std considered bad Is it really that inefficient or risk declaring ambiguous vars..
Do-While and if-else statements in C/C++ macros http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macros statement were not wrapped in curly brackets you'd get a bad surprise. if corge BAR corge else gralt The above code would..
http://stackoverflow.com/questions/1647631/c-state-machine-design for information passing where necessary. This isn't as bad as it sounds since the FSM is usually locked up inside a single..
http://stackoverflow.com/questions/2979209/using-fflushstdin exactly how my CS professor taught the class to do it. How bad is using fflush stdin Should I really abstain from using it.. the behavior is undefined. So it's not a question of how bad this is. fflush stdin is plainly wrong and you mustn't use it..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new to help make bugs reproducable . Of course it is bad if the constant filling of weird values masks a bug. Mathematically.. values at least are less typical and are good at finding bad addresses. Atypical values i.e. not too often are good since..
http://stackoverflow.com/questions/484635/are-global-variables-bad global variables bad In C C are global variables as bad as my professor thinks they.. global variables bad In C C are global variables as bad as my professor thinks they are c c global variables share..
How to convert a number to string and vice versa in C++ http://stackoverflow.com/questions/5290089/how-to-convert-a-number-to-string-and-vice-versa-in-c on both atoi and atof including how they behave in case of bad input. However the link contains an error in that according.. 42.2 int i boost lexical_cast int si i is 42 In case of a bad input lexical_cast throws an exception of type boost bad_lexical_cast..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes size STDERR_FILENO exit 1 void baz int foo int 1 make a bad pointer printf d n foo causes segfault void bar baz void foo..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used still rages. I see Singletons as a Design Pattern good and bad . The problem with Singleton is not the Pattern but rather the.. Also appropriate would be a list of Anti Usages and common bad implementations explaining why they fail to work and for good..
How to pass variable number of arguments to printf/sprintf http://stackoverflow.com/questions/1056411/how-to-pass-variable-number-of-arguments-to-printf-sprintf c c printf varargs share improve this question Bad void Error const char format ... char dest 1024 16 va_list argptr..
http://stackoverflow.com/questions/1085490/how-do-c-c-compilers-work I signed up for subject called Parsing and Translation . Bad move. It ended up being the Professor's vehicle for testing..
Convert string to int with bool/fail in C++ http://stackoverflow.com/questions/1243428/convert-string-to-int-with-bool-fail-in-c
throwing exceptions out of a destructor http://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor the application will terminate. #include iostream class Bad public ~Bad throw 1 int main try Bad bad catch ... std cout.. will terminate. #include iostream class Bad public ~Bad throw 1 int main try Bad bad catch ... std cout Print This.. iostream class Bad public ~Bad throw 1 int main try Bad bad catch ... std cout Print This std endl try Bad bad throw..
http://stackoverflow.com/questions/15431365/cudamemcpy-segmentation-fault terminating with default action of signal 11 SIGSEGV 19340 Bad permissions for mapped region at address 0x2003000C0 19340 at..
Adding an include guard breaks the build http://stackoverflow.com/questions/1744144/adding-an-include-guard-breaks-the-build is less than your chance of winning the lottery Bad include guard names for file config.h CONFIG_H much too general..
How to easily map c++ enums to strings http://stackoverflow.com/questions/207976/how-to-easily-map-c-enums-to-strings Value 2 case VAL1 return Value 3 default throw Exception Bad MyEnum I have a gut feeling that there's an elegant solution..
What is useful about a reference-to-array parameter? http://stackoverflow.com/questions/2188991/what-is-useful-about-a-reference-to-array-parameter a decayed approach void foo int arr pointer to an element Bad practice The decayed approach should be normally reserved for..
Conversion of pointer-to-pointer between derived and base classes? http://stackoverflow.com/questions/2532422/conversion-of-pointer-to-pointer-between-derived-and-base-classes
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new Block Memory allocated by LocalAlloc . 0xBAADF00D Bad Food Memory allocated by LocalAlloc with LMEM_FIXED but not..
Should objects delete themselves in C++? http://stackoverflow.com/questions/522637/should-objects-delete-themselves-in-c time the map or the inventory tries to access the object Bad Things Happen. In general I'd say it is very unintuitive for..
how to find memory leak in c++ code/project http://stackoverflow.com/questions/6261201/how-to-find-memory-leak-in-c-code-project 30 char str2 new char 40 strcpy str1 Memory leak str2 str1 Bad Now the 40 bytes are impossible to free. delete str2 This deletes..
ifstream not reading EOF character http://stackoverflow.com/questions/6512173/ifstream-not-reading-eof-character About to try to read the file endl if curfile.good cout Bad file read endl while curfile.eof cout Getting line linenumber..
Does there exist a static_warning? http://stackoverflow.com/questions/8936063/does-there-exist-a-static-warning typename T struct wrap typedef T type STATIC_WARNING 4 5 Bad with 4 and 5 STATIC_WARNING 4 5 Good on 4 and 5 STATIC_WARNING_TEMPLATE.. with T int is deprecated declared at static_warning.cpp 19 Bad with 4 and 5 Wdeprecated declarations While Visual C 2010 at.. warnproj.cpp 19 warning C4996 'wrap T static_warning19 _' Bad with 4 and 5 with T int warnproj.cpp 19 see declaration of..
Why are not all boost libraries header-only? http://stackoverflow.com/questions/11363011/why-are-not-all-boost-libraries-header-only picked headers e.g. #include boost huge boost library.hpp BAD #include boost huge boost library just a part of it.hpp BETTER..
Aliasing `T*` with `char*` is allowed. Is it also allowed the other way around? http://stackoverflow.com/questions/12612488/aliasing-t-with-char-is-allowed-is-it-also-allowed-the-other-way-around not be legal int i 0 short s reinterpret_cast short i BAD The standard however allows an exception to this rule any object..
Which iomanip manipulators are 'sticky'? http://stackoverflow.com/questions/1532640/which-iomanip-manipulators-are-sticky ss timestruct.tm_min std string filingTime ss.str BAD '0794' So I have a number of questions Why is setw this way..
What is the “assert” function? http://stackoverflow.com/questions/1571340/what-is-the-assert-function program should never rely on the assert macro running. BAD assert x GOOD assert x x Watch out Depends on the function assert..
Give focus to a Window launched from a system service using CreateProcessAsUser http://stackoverflow.com/questions/17451033/give-focus-to-a-window-launched-from-a-system-service-using-createprocessasuser you should be able to steal the focus . Remenber It's BAD to steal focus but I fully understand the what my client is..
placement new to defer to a different constructor http://stackoverflow.com/questions/2668144/placement-new-to-defer-to-a-different-constructor the memory of the first object. In other words it's BAD Don't do it The most common workaround is to use some kind of..
http://stackoverflow.com/questions/2690328/qt-quncompress-gzip-data hold 35615 strm msg char incorrect header check state mode BAD break inflate.c line 610. I know that qUncompress is simply..
Using read() directly into a C++ std:vector http://stackoverflow.com/questions/2780365/using-read-directly-into-a-c-stdvector can also read into myvec 0 though this is probably a VERY BAD IDEA. Obviously doing this doesn't allow myvec.size to return..
http://stackoverflow.com/questions/32168/c-cast-syntax-styles auto_ptr int new int 5 GOOD f auto_ptr int new int 5 BAD The static_cast here will actually call the auto_ptr constructor...
Question about the volatile keyword http://stackoverflow.com/questions/3263873/question-about-the-volatile-keyword platforms it might be sufficient to use volatile. This is BAD ADVICE in general but if you have a single core and all writes..
Why don't static member variables play well with the ternary operator? http://stackoverflow.com/questions/5446005/why-dont-static-member-variables-play-well-with-the-ternary-operator void go private static const int GOOD 0 static const int BAD 1 Here's my implementation with the ternary operator #include.. Test go int num 3 int localStatus localStatus num 2 GOOD BAD Here's main function #include iostream #include test.h using.. GOOD' test.cpp .text 0x1f undefined reference to `Test BAD' collect2 ld returned 1 exit status However if I replace this..
How do I select a range of values in a switch statement? http://stackoverflow.com/questions/9432226/how-do-i-select-a-range-of-values-in-a-switch-statement break case 0 cout e break case 0 cout f break default cout BAD VALUE break cout endl return 0 How can I fix this problem It's..
“As a rule of thumb, make all your methods virtual” in C++ - sound advice? http://stackoverflow.com/questions/9660207/as-a-rule-of-thumb-make-all-your-methods-virtual-in-c-sound-advice this question Is there anything to it The advice is BAD there is no question about it. Reading something like that would..
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