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Unique Ptr
In computer science, a smart pointer is an abstract data type that simulates a Pointer (computer programming), pointer while providing added features, such as automatic memory management or bounds checking. Such features are intended to reduce bugs caused by the misuse of pointers, while retaining efficiency. Smart pointers typically keep track of the memory they point to, and may also be used to manage other resources, such as network connections and file handles. Smart pointers were first popularized in the programming language C++ during the first half of the 1990s as rebuttal to criticisms of C++'s lack of Garbage collection (computer science), automatic garbage collection. Pointer misuse can be a major source of bugs. Smart pointers prevent most situations of memory leaks by making the memory deallocation automatic. More generally, they make object destruction automatic: an object controlled by a smart pointer is automatically destroyed (finalization, finalized and then deall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Auto Ptr
auto_ptr is a class template that was available in previous versions of the C++ standard library (declared in the header file), which provides some basic RAII features for C++ raw pointers. It has been replaced by the unique_ptr class. The auto_ptr template class describes an object that stores a pointer to a single allocated object that ensures that the object to which it points gets destroyed automatically when control leaves a scope. The C++11 standard made auto_ptr deprecated, replacing it with the unique_ptr class template. auto_ptr was fully removed in C++17. For shared ownership, the shared_ptr template class can be used. shared_ptr was defined in C++11 and is also available in the Boost library for use with previous C++ versions. Declaration The auto_ptr class is declared in ISO/IEC 14882, section 20.4.5 as: namespace std Semantics The auto_ptr has semantics of strict ownership, meaning that the auto_ptr instance is the sole entity responsible for the object's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |