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c++ Programming Glossary: storingHow do malloc() and free() work? http://stackoverflow.com/questions/1119134/how-do-malloc-and-free-work char memset p 0 4 strcpy char p abcdabcd deliberately storing 8bytes cout p free p Obvious Crash but I need how it works and.. also optimizations in handling the free list for example storing the chunks in lists sorted by sizes. But all optimizations also..
C++ STL: should I store entire objects, or pointers to objects? http://stackoverflow.com/questions/141337/c-stl-should-i-store-entire-objects-or-pointers-to-objects over your collection and it's a non polymorphic type storing object copies will be more efficent since you'll get better.. better locality of reference. Otoh if updates are common storing pointers will save the copy relocation costs. share improve..
What is “cache-friendly” code? http://stackoverflow.com/questions/16699247/what-is-cache-friendly-code CPUs spend around 85 of die on caches and up to 99 for storing moving data There is quite a lot to be said on the subject... ex. fortran matlab vs. row major ordering ex. c c for storing two dimensional arrays. For example consider the following matrix..
http://stackoverflow.com/questions/1761626/weighted-random-numbers often pick one at random and as long as your container is storing pointers to the objects or is more than a few dozen items long.. if this helps or hinders then there is an optimisation By storing the cumulative weight sum in each item you can use a binary..
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 of destructors. So it prepends the array with a size_t storing the number of elements. Now the address returned by new points..
Is there a max array length limit in C++? http://stackoverflow.com/questions/216259/is-there-a-max-array-length-limit-in-c limit somehow or do I have to search for a better way of storing information And what should be the simplest way What I have.. And what should be the simplest way What I have to do is storing long long int on an array I'm working in a Linux environment...
Purpose of Unions in C and C++ http://stackoverflow.com/questions/2310483/purpose-of-unions-in-c-and-c is to save memory by using the same memory region for storing different objects at different times. That's it. It is like..
demote boost::function to a plain function pointer http://stackoverflow.com/questions/282372/demote-boostfunction-to-a-plain-function-pointer Signature ' to 'void __cdecl type void ' I can avoid storing a boost function and just pass the bound functor directly but..
When should static_cast, dynamic_cast and reinterpret_cast be used? http://stackoverflow.com/questions/332030/when-should-static-cast-dynamic-cast-and-reinterpret-cast-be-used such as casting the value from one pointer to another or storing a pointer in an int or all sorts of other nasty things. Largely.. like turning a raw data stream into actual data or storing data in the low bits of an aligned pointer. C casts are casts..
Is a string literal in c++ created in static memory? http://stackoverflow.com/questions/349025/is-a-string-literal-in-c-created-in-static-memory memory in terms of ROM just memory that's dedicated to storing unchangeable stuff which may be marked really read only by the..
Why does C++ not have reflection? http://stackoverflow.com/questions/359237/why-does-c-not-have-reflection to the compilation model adding self contained modules storing metadata for select types allowing other modules to reference..
5 years later, is there something better than the “Fastest Possible C++ Delegates”? http://stackoverflow.com/questions/4298408/5-years-later-is-there-something-better-than-the-fastest-possible-c-delegate is that they're not all the same size. So instead of storing pointers to methods directly we need to standardize them so..
I've heard i++ isn't thread safe, is ++i thread-safe? http://stackoverflow.com/questions/680097/ive-heard-i-isnt-thread-safe-is-i-thread-safe thread safe statement since in assembly it reduces down to storing the original value as a temp somewhere incrementing it and then..
“unpacking” a tuple to call a matching function pointer http://stackoverflow.com/questions/7858817/unpacking-a-tuple-to-call-a-matching-function-pointer alternative better way of achieving the same net result of storing forwarding some values and a function pointer until an arbitrary..
Smart Pointers: Or who owns you baby? [closed] http://stackoverflow.com/questions/94227/smart-pointers-or-who-owns-you-baby wrapper. N.B. If you don't own an object you should not be storing it because you can not know when it will go out of scope and..
Storing C++ template function definitions in a .CPP file http://stackoverflow.com/questions/115703/storing-c-template-function-definitions-in-a-cpp-file C template function definitions in a .CPP file I have some..
Storing boost::function objects in a container http://stackoverflow.com/questions/13094720/storing-boostfunction-objects-in-a-container boost function objects in a container I have a vector of KeyCallbacks..
When to make a type non-movable in C++11? http://stackoverflow.com/questions/14302834/when-to-make-a-type-non-movable-in-c11 between std mutex objects or the std mutex must not move. Storing it on the heap isn't possible because a std mutex has a constexpr..
Saving passwords inside an application http://stackoverflow.com/questions/1484440/saving-passwords-inside-an-application store them so that the program can read them again later. Storing it in some variables sounds like a stupid idea. Found that KDE..
Best Way to Store a va_list for Later Use in C/C++ http://stackoverflow.com/questions/1562992/best-way-to-store-a-va-list-for-later-use-in-c-c stable and portable . c c share improve this question Storing the va_list itself is not a great idea the standard only requires..
Storing a lua class with parent in luabind::object (updated) http://stackoverflow.com/questions/1939864/storing-a-lua-class-with-parent-in-luabindobject-updated a lua class with parent in luabind object updated Using C lua..
STL deque accessing by index is O(1)? http://stackoverflow.com/questions/2297164/stl-deque-accessing-by-index-is-o1 I found this deque implementation from Wikipedia Storing contents in multiple smaller arrays allocating additional arrays..
Storing multiple messages in one protocol buffer binary file http://stackoverflow.com/questions/5586323/storing-multiple-messages-in-one-protocol-buffer-binary-file multiple messages in one protocol buffer binary file I have..
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 YourClass a for int i 0 i a.size i delete a i a.clear Storing raw pointers in standard containers is not a good idea. If you..
http://stackoverflow.com/questions/740577/sizeof-a-union-in-c-c about the currently active member yourself somewhere else. Storing such a flag in addition to the union for example having a struct..
boost::tokenizer vs boost::split http://stackoverflow.com/questions/7930796/boosttokenizer-vs-boostsplit you can figure it taking more than 8x that count. Storing these strings in a vector is costly in terms of memory and time...
Why is a class allowed to have a static member of itself, but not a non-static member? http://stackoverflow.com/questions/8517609/why-is-a-class-allowed-to-have-a-static-member-of-itself-but-not-a-non-static-m in the class instance that's why a static would work. Storing an object inside another object of the same type would break..
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