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vector - C++ Users
Therefore, compared to arrays, vectors consume more memory in exchange for the ability to manage storage and grow dynamically in an efficient way. Compared to the other dynamic sequence containers ( deques , lists and forward_lists ), vectors are very efficient accessing its elements (just like arrays) and relatively efficient adding or removing elements from its end .
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std::vector - cppreference.com
Except for the std::vector<bool> partial specialization, the elements are stored contiguously, which means that elements can be accessed not only through iterators, but also using offsets to regular pointers to elements. This means that a pointer to an element of a vector may be passed to any function that expects a pointer to an element of an array.
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C++ vector Library Reference (vector functions) - W3Schools
Fills a vector with multiple values: at() Returns an indexed element from a vector: back() Returns the last element of a vector: begin() Returns an iterator pointing to the beginning of a vector: capacity() Returns the number of elements that a vector's reserved memory is able to store: clear() Removes all of the contents of a vector: data()
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std::vector reference | C++ Programming Language
std::vector is a container that encapsulates dynamic size arrays. Memory The elements are stored contiguously, one after another. This means that a pointer to an element of a vector may be passed to any function that expects a pointer to an element of an array.
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Vector in C++ STL - GeeksforGeeks
Vectors can be passed to a function as arguments just like any other variable in C++. But it is recommended to pass the vector by reference so as to avoid the copying of all elements which can be expensive if the vector is large. Refer to this article to know more - Passing Vector to a Function. Internal Working of Vector
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vector::~vector - C++ Reference - cplusplus.com
Complexity Linear in vector::size (destructors). Iterator validity All iterators, pointers and references are invalidated. Data races The container and all its elements are modified.
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vector - C++ Users
Parameters alloc Allocator object. The container keeps and uses an internal copy of this allocator. Member type allocator_type is the internal allocator type used by the container, defined in vector as an alias of its second template parameter (Alloc). If allocator_type is an instantiation of the default allocator (which has no state), this is not relevant.
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vector::erase - C++ Reference - cplusplus.com
Removes from the vector either a single element (position) or a range of elements ([first,last)). This effectively reduces the container size by the number of elements removed, which are destroyed. Because vectors use an array as their underlying storage, erasing elements in positions other than the vector end causes the container to relocate all the elements after the segment erased to their ...
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vector::empty - C++ Reference - cplusplus.com
The example initializes the content of the vector to a sequence of numbers (form 1 to 10). It then pops the elements one by one until it is empty and calculates their sum.
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std::vector - cppreference.cn - C++参考手册
vector 的存储是自动处理的,根据需要扩展。Vectors 通常比静态数组占用更多空间,因为分配了更多内存来处理未来的增长。这样,vector 不需要每次插入元素时都重新分配,而仅在额外内存耗尽时才重新分配。可以使用 capacity() 函数查询已分配内存的总量。