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c++ Programming Glossary: boundarywriting directly to std::string internal buffers http://stackoverflow.com/questions/1042940/writing-directly-to-stdstring-internal-buffers for a way to stuff some data into a string across a DLL boundary. Because we use different compilers all our dll interfaces are..
http://stackoverflow.com/questions/1604968/what-does-this-c-code-mean alignment of the next bit field at an allocation unit boundary. Only when declaring an unnamed bit field may the value of the..
CoCreateInstance returning E_NOINTERFACE even though interface is found http://stackoverflow.com/questions/1781906/cocreateinstance-returning-e-nointerface-even-though-interface-is-found to QueryInterface it does not make it across the process boundary because COM cannot figure out how to marshal that interface..
Determine if two rectangles overlap each other? http://stackoverflow.com/questions/306316/determine-if-two-rectangles-overlap-each-other
::std::vector::at() vs operator[] << surprising results!! 5 to 10 times slower/faster! http://stackoverflow.com/questions/3269809/stdvectorat-vs-operator-surprising-results-5-to-10-times-slower-f . Reading a bit on the web got me to realize that at has boundary checking. Ok but slowing the operation by up to 10 times Is.. by up to 10 times Is there any reason for that I mean boundary checking is a simple number comparison or am I missing something.. with in other code parts in which I already have custom boundary check . Proof of concept #define _WIN32_WINNT 0x0400 #define..
Determining the alignment of C/C++ structures in relation to its members http://stackoverflow.com/questions/364483/determining-the-alignment-of-c-c-structures-in-relation-to-its-members significantly slower if they are not aligned on a 4 byte boundary. There is no portable way to determine the alignment enforced..
http://stackoverflow.com/questions/5435841/memory-alignment-in-c-structs At least on most machines a type is only ever aligned to a boundary as large as the type itself Edit you can't really demand any.. That means your first first struct is aligned to a 2 byte boundary. Since all the members are 2 bytes apiece no padding is inserted.. contains a 4 byte item which gets aligned to a 4 byte boundary. Since it's preceded by 6 bytes 2 bytes of padding is inserted..
http://stackoverflow.com/questions/671703/array-index-out-of-bound-in-c question The problem is that C C doesn't actually do any boundary checking with regards to arrays. It depends on the OS to ensure..
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 allocations will appear at the same offset from a page boundary. Here's the test code int main const int n 100000 #ifdef ALLOCATE_SEPERATE..
Need for predictable random generator http://stackoverflow.com/questions/910215/need-for-predictable-random-generator it returns a fair ifying hit. It is deemed unfair based on boundary probabilities. For instance for a probability of 20 you could..
Is it safe to delete a void pointer? http://stackoverflow.com/questions/941832/is-it-safe-to-delete-a-void-pointer sense it is safe as long as your allocator uses internal boundary tags. Many do. However as mentioned above deleting a void pointer..
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