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c++ Programming Glossary: copyinghttp://stackoverflow.com/questions/236129/how-to-split-a-string-in-c string ostream_iterator string cout n Instead of copying the extracted tokens to an output stream one could insert them..
http://stackoverflow.com/questions/3106110/what-is-move-semantics that.data 0 What have we done here Instead of deeply copying the heap data we have just copied the pointer and then set the.. is to move resources from one object to another instead of copying them. Congratulations you now understand the basics of move..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom merely swaps pointers and sizes rather than allocating and copying entire arrays. Aside from this bonus in functionality and efficiency.. of course as mentioned in previously linked article the copying moving of the value may simply be elided altogether. And so..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c can be expensive and we might want to avoid the cost of copying it. Therefore we might come up with idea of returning by reference.. two reasons. Firstly due to the implementation of strings copying a string tends to be inexpensive. Secondly due to what's known..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three is The Rule of Three What does copying an object mean What are the copy constructor and the copy assignment.. copied in various contexts and we should understand what copying an object actually means. Let us consider a simple example class.. copy a person object The main function shows two distinct copying scenarios. The initialization person b a is performed by the..
http://stackoverflow.com/questions/4421706/operator-overloading but in the case of operator there is no way around the copying. When you write a b you expect the result to be a new value..
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 can be confusing at first in particular when it comes to copying pointer values around and still referencing the same memory..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks auto_ptr but it's now deprecated because it has a strange copying behaviour. And then there are some even smarter examples like..
Implicitly treating returned lvalue as rvalue http://stackoverflow.com/questions/11509757/implicitly-treating-returned-lvalue-as-rvalue treating returned lvalue as rvalue 12.8 Copying and moving class objects class.copy ยง31 and ยง32 say in a return..
C++ Vector of Pointers to Objects http://stackoverflow.com/questions/1361139/c-vector-of-pointers-to-objects to exist that count goes to zero it frees the pointer. Copying simply increases the reference count and moving transfers ownership..
Why use variadic arguments now when initializer lists are avaiable? http://stackoverflow.com/questions/15465543/why-use-variadic-arguments-now-when-initializer-lists-are-avaiable access to an array of objects of type const E . ... Copying an initializer list does not copy the underlying elements. .....
Move member function generation http://stackoverflow.com/questions/16897845/move-member-function-generation interface to an evolving code base. end note Section 12.8 Copying and moving class objects point 9 If the definition of a class..
questions regarding the design of std::initializer_list http://stackoverflow.com/questions/17623098/questions-regarding-the-design-of-stdinitializer-list used to implement initializer lists as specified in 8.5.4. Copying an initializer list does not copy the underlying elements. end.. Which is made obvious by the last portion of the quote Copying an initializer list does not copy the underlying elements. Seeing..
C++ Copy constructor, temporaries and copy semantics http://stackoverflow.com/questions/2323225/c-copy-constructor-temporaries-and-copy-semantics constructors on GCC . Also for MSVC see this article. 12.8 Copying class objects 15 When certain criteria are met an implementation..
Reference Parameters in C++: VERY basic example please http://stackoverflow.com/questions/2564873/reference-parameters-in-c-very-basic-example-please a function. Consider we have a data type that's very big. Copying this object takes a lot of time and we'd like to avoid that..
non-copyable objects and value initialization: g++ vs msvc http://stackoverflow.com/questions/2671532/non-copyable-objects-and-value-initialization-g-vs-msvc object of the same type as the object being initialized. Copying the temporary object to the object. The constructor must be..
How are C array members handled in copy control functions? http://stackoverflow.com/questions/4164279/how-are-c-array-members-handled-in-copy-control-functions this question This is what the standard says in 12.8 Copying class objects . Copy construction Each subobject is copied in..
Pointers, smart pointers or shared pointers? http://stackoverflow.com/questions/417481/pointers-smart-pointers-or-shared-pointers as releasing the pointer allowing someone else to own it. Copying them does not make sense. Shared pointers is a stack allocated..
Creating and returning a big object from a function http://stackoverflow.com/questions/4809120/creating-and-returning-a-big-object-from-a-function by the C standard ISO 14882 2003 C Standard ยง12.8 para. 15 Copying Class Objects When certain criteria are met an implementation..
Copying a Polymorphic object in C++ http://stackoverflow.com/questions/5148706/copying-a-polymorphic-object-in-c a Polymorphic object in C I have base class Base from which..
Why should one not derive from c++ std string class? http://stackoverflow.com/questions/6006860/why-should-one-not-derive-from-c-std-string-class Constructing a base. std endl Base const Base std cout Copying a base. std endl ~Base std cout Destroying a base. std endl.. a derived. std endl Derived const Derived Base std cout Copying a derived. std endl ~Derived std cout Destroying a derived...
Why copying stringstream is not allowed? http://stackoverflow.com/questions/6010864/why-copying-stringstream-is-not-allowed reference c stringstream share improve this question Copying of ANY stream in C is disabled by having made the copy constructor.. it is stringstream istream ostream iostream or whatever. Copying of stream is disabled because it doesn't make sense. Its very..
Why isn't operator overloading for pointers allowed to work? http://stackoverflow.com/questions/6171630/why-isnt-operator-overloading-for-pointers-allowed-to-work to a non pointer what such an assignment is supposed to do Copying the content of the address pointed to by pointer to the destination..
Sharing precompiled headers between projects in Visual Studio http://stackoverflow.com/questions/645747/sharing-precompiled-headers-between-projects-in-visual-studio a discrepancy will arise and the compiler will complain. Copying the above mentioned files every time there is a rebuild or every..
Why can't we pass arrays to function by value? http://stackoverflow.com/questions/7454990/why-cant-we-pass-arrays-to-function-by-value decay into pointers when passed to a function is simple. Copying arrays would be kind of complicated and not very clear since..
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