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c++ Programming Glossary: allocateC++ Which is faster: Stack allocation or Heap allocation http://stackoverflow.com/questions/161053/c-which-is-faster-stack-allocation-or-heap-allocation another developer I work with. I was taking care to stack allocate things where I could instead of heap allocating them. He was..
http://stackoverflow.com/questions/162941/why-use-pointers to another variable that only got a certain limited space allocated. You would most likely end up writing over something else in.. to the char array pointer when you declare it you MUST allocate sufficient amount of memory to it before giving it a value... in memory though free x Same as malloc but here the allocated space is filled with null characters x char calloc 6 sizeof..
In what cases do I use malloc vs new? http://stackoverflow.com/questions/184537/in-what-cases-do-i-use-malloc-vs-new I use malloc vs new I see in C there are multiple ways to allocate and free data and I understand that when you call malloc you..
What uses are there for “placement new”? http://stackoverflow.com/questions/222557/what-uses-are-there-for-placement-new allows you to construct an object on memory that's already allocated. You may want to do this for optimizations it is faster not.. want to do this for optimizations it is faster not to re allocate all the time but you need to re construct an object multiple.. need to keep re allocating it might be more efficient to allocate more than you need even though you don't want to use it yet...
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring ios beg go back to the beginning buffer new char length allocate memory for a buffer of appropriate dimension t.read buffer length.. KeithB's point in the comments here's a way to do it that allocates all the memory up front rather than relying on the string class's..
Undefined reference to static class member http://stackoverflow.com/questions/272900/undefined-reference-to-static-class-member c g share improve this question You need to actually allocate the static member somewhere after the class definition . Try..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome the real world memory allocation cannot be told where to allocate but will find a suitable spot with enough room and report back.. spot with enough room and report back the address to the allocated memory. In other words the entrepreneur will choose the spot... house and it will be left standing. In other words the allocated memory will stay allocated until the application closes at..
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 calls into a heap manager that knows how to dynamically allocate storage when it is needed and reclaim it when it is no longer.. systems you get one stack per thread and the stack is allocated to be a certain fixed size. When you call a method stuff is..
Why should `new` be used as little as possible? http://stackoverflow.com/questions/6500313/why-should-new-be-used-as-little-as-possible huge advantages to using the language. You do not have to allocate everything on the stack. Stop thinking like a Java programmer... for each the stack and the heap. Stack The stack always allocates memory in a sequential fashion. It can do so because it requires.. it requires minimal book keeping and the next address to allocate is implicit. In C this is called automatic storage because the..
OpenCV 2.3 C++ Visual Studio 2010 http://stackoverflow.com/questions/7011238/opencv-2-3-c-visual-studio-2010 #include highgui.h int _tmain int argc _TCHAR argv int c allocate memory for an image IplImage img capture from video device #1..
How should I write ISO C++ Standard conformant custom new and delete operators? http://stackoverflow.com/questions/7194127/how-should-i-write-iso-c-standard-conformant-custom-new-and-delete-operators the requirements. Requirement #1 It should dynamically allocate at least size bytes of memory and return a pointer to the allocated.. at least size bytes of memory and return a pointer to the allocated memory. Quote from the C standard section 3.7.4.1.3 The allocation.. section 3.7.4.1.3 The allocation function attempts to allocate the requested amount of storage. If it is successful it shall..
Setting ROI with mouse from a rectangle on a video http://stackoverflow.com/questions/10881397/setting-roi-with-mouse-from-a-rectangle-on-a-video cvQueryFrame #2 n return 2 cvSetImageROI vid_frame box Allocate space for a single channel ROI to store grayscale frames IplImage..
What is exactly the base pointer and stack pointer? To what do they point? http://stackoverflow.com/questions/1395591/what-is-exactly-the-base-pointer-and-stack-pointer-to-what-do-they-point etc. Call function which pushes return address Push ebp Allocate space for locals My question last i hope now is what is exactly..
http://stackoverflow.com/questions/162941/why-use-pointers address to point at. So here's a few examples char x Allocate 6 bytes of memory for me and point x to the first of them. x..
What is the difference between new/delete and malloc/free? http://stackoverflow.com/questions/240212/what-is-the-difference-between-new-delete-and-malloc-free management share improve this question new delete Allocate release memory Memory allocated from 'Free Store' Returns a.. used to initialize destroy the object malloc free Allocates release memory Memory allocated from 'Heap' Returns a void..
Template deduction for function based on its return type? http://stackoverflow.com/questions/2612961/template-deduction-for-function-based-on-its-return-type deduction to achieve the following GCPtr A ptr1 GC Allocate GCPtr B ptr2 GC Allocate instead of what I currently have GCPtr.. the following GCPtr A ptr1 GC Allocate GCPtr B ptr2 GC Allocate instead of what I currently have GCPtr A ptr1 GC Allocate A.. Allocate instead of what I currently have GCPtr A ptr1 GC Allocate A GCPtr B ptr2 GC Allocate B My current Allocate function looks..
C++ format macro / inline ostringstream http://stackoverflow.com/questions/303562/c-format-macro-inline-ostringstream function. Kudos to coppro So to pull this off we need to Allocate a temporary ostringstream . Convert it to an ostream . Append..
http://stackoverflow.com/questions/3907028/opencv-process-every-frame this function. IplImage make_it_gray IplImage frame Allocate space for a new image IplImage gray_frame 0 gray_frame cvCreateImage..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome the core system routines or you risk crashing the program. Allocate memory Get an entrepreneur to build your house and give you..
How to download a file with WinHTTP in C/C++? http://stackoverflow.com/questions/822714/how-to-download-a-file-with-winhttp-in-c-c Error u in WinHttpQueryDataAvailable. n GetLastError Allocate space for the buffer. pszOutBuffer new char dwSize 1 if pszOutBuffer..
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