c++ Programming Glossary: signHeap corruption under Win32; how to locate? http://stackoverflow.com/questions/1069/heap-corruption-under-win32-how-to-locate the bad guy who's writing to freed memory. Yes this is a sign of desperation who the hell rewrites new and delete I wonder..
Very poor boost::lexical_cast performance http://stackoverflow.com/questions/1250795/very-poor-boostlexical-cast-performance is 4294967295 that is 10 chars On the safe side add 1 for sign and 1 for trailing zero char buffer 12 sprintf buffer i value.. is 4294967295 that is 10 chars On the safe side add 1 for sign and 1 for trailing zero char buffer 12 sprintf buffer i arg..
Problems with Singleton Pattern http://stackoverflow.com/questions/1392315/problems-with-singleton-pattern please elaborate on this testing concern Thanks. c design patterns singleton share improve this question In a garbage.. . Keep reading for more on this... And it leads to a bad design too Singletons are also a sign of a poor design. Some programmers.. And it leads to a bad design too Singletons are also a sign of a poor design. Some programmers want to make their database..
biggest integer that can be stored in a double http://stackoverflow.com/questions/1848700/biggest-integer-that-can-be-stored-in-a-double the bias has been taken off the exponent and ignoring the sign bit as irrelevant to the question the value stored by a double..
Is there a standard sign function (signum, sgn) in C/C++? http://stackoverflow.com/questions/1903954/is-there-a-standard-sign-function-signum-sgn-in-c-c there a standard sign function signum sgn in C C I want a function that returns 1.. there a standard sign function signum sgn in C C I want a function that returns 1 for negative.. T val return T 0 val val T 0 Benefits Actually implements signum 1 0 or 1 . Implementations here using copysign only return..
At what point is it worth using a database? http://stackoverflow.com/questions/2648802/at-what-point-is-it-worth-using-a-database where larger databases are commonly used. I am designing a GUI for a single user on a desktop to interface with a.. some form of data driven execution. Your spending time designing and developing external data storage structures. Sharing.. the data is changing but the execution is not this is a sign of a data driven program or parts of the program are data driven...
What belongs in an educational tool to demonstrate the unwarranted assumptions people make in C/C++? http://stackoverflow.com/questions/3457967/what-belongs-in-an-educational-tool-to-demonstrate-the-unwarranted-assumptions-p int_min INT_MIN for 21 left to right int ltr_result 0 unsigned ltr_fun int k ltr_result ltr_result 10 k return 1 int main.. EXPECT 03 a char is 8 bits CHAR_BIT 8 EXPECT 04 a char is signed CHAR_MIN SCHAR_MIN integers EXPECT 05 int has the size of.. 0 NULL suggested by David Thornley EXPECT 17 size_t is unsigned int sizeof size_t sizeof unsigned int this is true for C99..
How to code a modulo (%) operator in C/C++/Obj-C that handles negative numbers http://stackoverflow.com/questions/4003232/how-to-code-a-modulo-operator-in-c-c-obj-c-that-handles-negative-numbers nonnegative then the remainder is nonnegative if not the sign of the remainder is implementation defined . share improve..
Is `long` guaranteed to be at least 32 bits? http://stackoverflow.com/questions/4329777/is-long-guaranteed-to-be-at-least-32-bits sizeof long int I deduced this from 3.9.1 2 There are four signed integer types 𦨴igned char 𦨴hort int 𦤹nt and 𦧺ong int. In this.. C standard does not specify the bitwise representation of signed negative numbers it has to either be twos complement and require.. require 32 bits of storage in total or it has an explicit sign bit which means that it has 32 bits of storage also. share..
C++ performance challenge: integer to std::string conversion http://stackoverflow.com/questions/4351371/c-performance-challenge-integer-to-stdstring-conversion Provide code for at conversion of at least 32 bit signed and unsigned integers into decimal. Produce output as a std.. code for at conversion of at least 32 bit signed and unsigned integers into decimal. Produce output as a std string . No.. . No tricks that are incompatible with threading and signals for example static buffers . You may assume an ASCII character..
Is it possible to program for Windows Phone 7 in standard C++ only? http://stackoverflow.com/questions/4539876/is-it-possible-to-program-for-windows-phone-7-in-standard-c-only WinMD classes as code behind for XAML. The visual XAML designer will probably choke and you'll need a dummy managed DLL anyway... EDIT if you want a native SDK on WP7 like I do please go sign the petition here and or the one over there . Thank you EDIT2..
Flags to enable thorough and verbose g++ warnings http://stackoverflow.com/questions/5088460/flags-to-enable-thorough-and-verbose-g-warnings style cast Woverloaded virtual Wredundant decls Wshadow Wsign conversion Wsign promo Wstrict null sentinel Wstrict overflow.. virtual Wredundant decls Wshadow Wsign conversion Wsign promo Wstrict null sentinel Wstrict overflow 5 Wswitch default.. users should probably have this on by default though. Wsign conversion was a tough one and almost didn't make the list ...
Finding duplicates in O(n) time and O(1) space http://stackoverflow.com/questions/5739024/finding-duplicates-in-on-time-and-o1-space what I came up with which doesn't require the additional sign bit for i 0 to n 1 while A A i A i swap A i A A i end while..
Modulo operator with negative values http://stackoverflow.com/questions/7594508/modulo-operator-with-negative-values nonnegative then the remainder is nonnegative if not the sign of the remainder is implementation defined. from ISO14882 2003..
Is it safe to use -1 to set all bits to true? http://stackoverflow.com/questions/809227/is-it-safe-to-use-1-to-set-all-bits-to-true bits to true I've seen this pattern used a lot in C C . unsigned int flags 1 all bits are true Is this a good portable way.. to 1 which will work always independent of the actual sign representation while ~ will sometimes have surprising behavior.. type. Only then you will get the most high value of an unsigned type. For an example of a possible surprise consider this..
Image scaling (KeepAspectRatioByExpanding) through OpenGL http://stackoverflow.com/questions/9011108/image-scaling-keepaspectratiobyexpanding-through-opengl to load yuv file return int yuv_file_sz yuv_file.tellg unsigned char memblock new unsigned char yuv_file_sz if memblock qDebug.. yuv_file_sz yuv_file.tellg unsigned char memblock new unsigned char yuv_file_sz if memblock qDebug GLWidget GLWidget Failed.. that it is working and just flip the ratio comparison sign i.e. if ratiox ratioy becomes if ratiox ratioy But i'm not sure..
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