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c++ Programming Glossary: checkBest way to detect integer overflow in C/C++ http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overflow-in-c-c ran a digit counting routine each time on a b and a b to check if the digits condition was satisfied. However spurious solutions.. generated when a b overflows the integer limit. I ended up checking for this using code like unsigned long b c c_test ... c_test.. I don't know whether it would be faster than simply checking the result the way you suggested because of the loop in the..
Reading from text file until EOF repeats last line http://stackoverflow.com/questions/21647/reading-from-text-file-until-eof-repeats-last-line 10 20 30 Output 10 20 30 30 Note I've skipped all error checking code to keep the code snippet small. The above behaviour.. to last iteration. You grabbed 30 then carried on to check for EOF. You haven't reached EOF because the EOF mark hasn't.. which is 30 just like in the previous iteration . Next you check for EOF in the loop condition and this time you're out of the..
Is it possible to write a C++ template to check for a function's existence? http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-template-to-check-for-a-functions-existence it possible to write a C template to check for a function's existence Is it possible to write a C template.. share improve this question Yes with SFINAE you can check if a given class does provide a certain method. Here's the working..
Regular cast vs. static_cast vs. dynamic_cast http://stackoverflow.com/questions/28002/regular-cast-vs-static-cast-vs-dynamic-cast and additions. static_cast performs no runtime checks. This should be used if you know that you refer to an object.. that you refer to an object of a specific type and thus a check would be unnecessary. Example void func void data conversion.. a MyClass object and thus there is no need for a runtime check to ensure this. dynamic_cast dynamic_cast is used for cases..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom code as n . The first is the self assignment test. This check serves two purposes it's an easy way to prevent us from running.. self assignment rarely occurs so most of the time this check is a waste. It would be better if the operator could work properly.. this means we are rid of the need for a self assignment check allowing a single uniform implementation of operator . Additionally..
How can I add reflection to a C++ application? http://stackoverflow.com/questions/41453/how-can-i-add-reflection-to-a-c-application and so on. This is not possible with C . Inspection by checking whether a class type class struct union has a method or nested.. tricks . Use boost type_traits for many things like checking whether a type is integral . For checking for the existance.. many things like checking whether a type is integral . For checking for the existance of a member function use http stackoverflow.com..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three against self assignment of the form x x . Without that check delete name would delete the array containing the source string.. also takes care of self assignment without an explicit check. An even more robust solution to this problem is the copy and..
How do you set, clear and toggle a single bit in C/C++? http://stackoverflow.com/questions/47981/how-do-you-set-clear-and-toggle-a-single-bit-in-c-c bit You didn't ask for this but I might as well add it. To check a bit AND it with the bit you want to check bit number 1 x That.. add it. To check a bit AND it with the bit you want to check bit number 1 x That will put the value of bit x into the variable..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers based on whether T const_iterator exists. Improvement idea check also if begin end exist. template typename T struct is_container_helper.. #if _MSC_VER 1400 Declare pretty_ostream_iterator as checked template typename T typename TChar typename TCharTraits struct.. T typename TChar typename TCharTraits struct std _Is_checked_helper pretty_ostream_iterator T TChar TCharTraits public..
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope the top drawer of the bedside table and go to sleep. You check out the next morning but forget to give back your key. You steal.. steal the key A week later you return to the hotel do not check in sneak into your old room with your stolen key and look in.. around. You don't know what is going to happen when you checked out of the hotel and stole a key to illegally use later you..
http://stackoverflow.com/questions/1095298/gcc-c-linker-errors-undefined-reference-to-vtable-for-xxx-undefined-refere dependecies among object files. Foreach library in order Check unresolved dependencies and see if the lib resolves them. If..
What is the difference between NULL, '\0' and 0 http://stackoverflow.com/questions/1296843/what-is-the-difference-between-null-0-and-0 comp.lang.c FAQ for more. See this pdf for the C standard. Check out sections 6.3.2.3 Pointers paragraph 3. share improve this..
Sizeof array passed as parameter http://stackoverflow.com/questions/1328223/sizeof-array-passed-as-parameter returning T respectively.... To explain the syntax Check for right left rule in google I found one description of it..
What open source C++ static analysis tools are available? [closed] http://stackoverflow.com/questions/141498/what-open-source-c-static-analysis-tools-are-available good open source static analysis tools such as FindBugs Checkstyle and PMD . Those tools are easy to use very helpful runs.. analysis tools that were found or suggested by others. C Check http sf.net projects cppcheck Oink http danielwilkerson.com..
Determining 32 vs 64 bit in C++ http://stackoverflow.com/questions/1505582/determining-32-vs-64-bit-in-c bit environment or not and use that to set my variables. Check windows #if _WIN32 _WIN64 #if _WIN64 #define ENVIRONMENT64 #else.. ENVIRONMENT64 #else #define ENVIRONMENT32 #endif #endif Check GCC #if __GNUC__ #if __x86_64__ __ppc64__ #define ENVIRONMENT64..
Static variables initialisation order http://stackoverflow.com/questions/211237/static-variables-initialisation-order I really doubt this will help in any useful way. For gcc Check out ld I have found that even changing the order of objects..
Private and Protected Members : C++ http://stackoverflow.com/questions/224966/private-and-protected-members-c but if that's not possible then use protected members. Check C FAQ Lite for a better understanding of the issue. This question..
How to set up unit testing for Visual Studio C++ http://stackoverflow.com/questions/3150/how-to-set-up-unit-testing-for-visual-studio-c CppUnit Boost.Test CppUnitLite NanoCppUnit Unit CxxTest Check out CPPUnitLite or CPPUnitLite2 . CPPUnitLite was created by..
Why does C++ not have reflection? http://stackoverflow.com/questions/359237/why-does-c-not-have-reflection is a simple example. You want to know about type T Check its type_traits. In C# you'd have to fish around after its type..
Testing stream.good() or !stream.eof() reads last line twice [duplicate] http://stackoverflow.com/questions/4324441/testing-stream-good-or-stream-eof-reads-last-line-twice rather than predicting the success of a future operation. Check the stream itself which is equivalent to an inverted fail check..
http://stackoverflow.com/questions/4340396/does-the-c-standard-mandate-poor-performance-for-iostreams-or-am-i-just-deali streams requires three steps each time data is appended Check that the incoming block fits the available buffer space. Copy..
Checking if a double (or float) is nan in C++ http://stackoverflow.com/questions/570669/checking-if-a-double-or-float-is-nan-in-c if a double or float is nan in C is there an isnan function..
Does vector::erase() on a vector of object pointers destroy the object itself? http://stackoverflow.com/questions/6353149/does-vectorerase-on-a-vector-of-object-pointers-destroy-the-object-itself be allocated by new then you should use boost shared_ptr . Check out the Boost documentation . An more generic elegant solution..
Check if a class has a member function of a given signature http://stackoverflow.com/questions/87372/check-if-a-class-has-a-member-function-of-a-given-signature if a class has a member function of a given signature I'm asking..
http://stackoverflow.com/questions/8896/memcached-on-windows-x64 admin stats UI etc. I'm not related to them in any way Check it out at http northscale.com products memcached.html and download.. without persistence and there's a 100 free version too. Check it out here http www.membase.org downloads share improve this..
Possible to call C++ code from C#? http://stackoverflow.com/questions/935664/possible-to-call-c-code-from-c it like so ManagedType mt new ManagedType mt.ManagedMethod Check out this blog post for a more explained example. share improve..
C++/CLI Converting from System::String^ to std::string http://stackoverflow.com/questions/946813/c-cli-converting-from-systemstring-to-stdstring c string c cli managed c share improve this question Check out System Runtime InteropServices Marshal StringToCoTaskMemUni..
Check at Compile-Time if Template Argument is void http://stackoverflow.com/questions/9625526/check-at-compile-time-if-template-argument-is-void at Compile Time if Template Argument is void I'm trying to..
http://stackoverflow.com/questions/1176131/design-by-contract-in-c Samek's approach. Just creating macros for REQUIRE ENSURE CHECK and INVARIANT based on the existing assert macro was very useful...
How do I calculate the week number given a date? http://stackoverflow.com/questions/274861/how-do-i-calculate-the-week-number-given-a-date our week# wrong int weekNum julian 6 7 probably better. CHECK THIS LINE. See comments. if dow dowJan1 adjust for being after..
How to check whether operator== exists? http://stackoverflow.com/questions/6534041/how-to-check-whether-operator-exists works. And it can be used for all such operators namespace CHECK namespace to let operator not become global typedef char no.. 1 also enum value sizeof T 0 T 0 sizeof no Usage std cout CHECK opEqualExists A value std endl See the demo here . share improve..
Child process receives parent's SIGINT http://stackoverflow.com/questions/6803395/child-process-receives-parents-sigint child process you need to do something like this #define CHECK x if x perror #x failed abort or whatever Block SIGINT. sigset_t.. sigset_t mask omask sigemptyset mask sigaddset mask SIGINT CHECK sigprocmask SIG_BLOCK mask omask 0 Spawn child. pid_t child_pid.. SIG_BLOCK mask omask 0 Spawn child. pid_t child_pid fork CHECK child_pid 0 if child_pid 0 Child CHECK setpgid 0 0 0 execl .....
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