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c++ Programming Glossary: occursAny reason to overload global new and delete? http://stackoverflow.com/questions/1152511/any-reason-to-overload-global-new-and-delete entire callstack for the active thread whenever an alloc occurs and aggregate statistics about that. You could ship the stack..
static constructors in C++? need to initialize private static objects http://stackoverflow.com/questions/1197106/static-constructors-in-c-need-to-initialize-private-static-objects seem like the optimal solution to the problem. The thought occurs to me that since the variables will be read only they can just..
What are copy elision and return value optimization? http://stackoverflow.com/questions/12953127/what-are-copy-elision-and-return-value-optimization skip to this answer . For common cases where copy elision occurs skip to this answer . Copy elision is an optimization implemented..
throwing exceptions out of a destructor http://stackoverflow.com/questions/130117/throwing-exceptions-out-of-a-destructor handle errors that occur during a destructor If an error occurs during a cleanup operation do you just ignore it If it is an..
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?) http://stackoverflow.com/questions/161177/does-c-support-finally-blocks-and-whats-this-raii-i-keep-hearing-about scopeLock will be destructed even if an exception occurs which will release the mutex and allow other functions to lock..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code with multiprocessor caches is called false sharing . This occurs when each individual processor is attempting to use data in.. you mean in this context is so called thrashing . This occurs when the process continuously generates page faults e.g. accesses..
How could pairing new[] with delete possibly lead to memory leak only? http://stackoverflow.com/questions/1913343/how-could-pairing-new-with-delete-possibly-lead-to-memory-leak-only
Best way to detect integer overflow in C/C++ http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overflow-in-c-c some chips have an internal flag that is set when overflow occurs but I've never seen it accessed through C or C . c c integer..
Why is volatile not considered useful in multithreaded C or C++ programming? http://stackoverflow.com/questions/2484980/why-is-volatile-not-considered-useful-in-multithreaded-c-or-c-programming the first point. It also guarantees that no reordering occurs between different volatile reads writes . All volatile memory..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom down and act as noise in the code self assignment rarely occurs so most of the time this check is a waste. It would be better..
Windows threading: _beginthread vs _beginthreadex vs CreateThread C++ http://stackoverflow.com/questions/331536/windows-threading-beginthread-vs-beginthreadex-vs-createthread-c provides a little extra information when an error occurs it can be checked by calling GetLastError ... but what are some..
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 such as Linux or VxWorks Why My understanding is this only occurs in Win32 debug configuration and it is used to detect memory..
Semantics of flags on basic_ios http://stackoverflow.com/questions/4258887/semantics-of-flags-on-basic-ios that has reached its end that is it is set when an error occurs because you try to read data that isn't there . The failbit..
When to use volatile with multi threading? http://stackoverflow.com/questions/4557979/when-to-use-volatile-with-multi-threading semantics a reference to a global or static object that occurs before a write to a volatile object in the instruction sequence.. semantics a reference to a global or static object that occurs after a read of volatile memory in the instruction sequence..
C++ : Catch a divide by zero error http://stackoverflow.com/questions/4747934/c-catch-a-divide-by-zero-error Here is a simple piece of code where a division by zero occurs. I'm trying to catch it #include iostream int main int argc.. efficient to try dividing and catching the error if it occurs than testing each time the divisor before dividing. I'm doing..
Finding duplicates in O(n) time and O(1) space http://stackoverflow.com/questions/5739024/finding-duplicates-in-on-time-and-o1-space has a nested loop it still runs in O N time. A swap only occurs if there is an i such that A i i and each swap sets at least..
How does photoshop blend two images together? http://stackoverflow.com/questions/5919663/how-does-photoshop-blend-two-images-together blend their respective channels. The blend operation that occurs for each blend mode in Photoshop can be summed up in the following..
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