我们可以将所有容器都分为两个部分,一个是实现部分,一个是allocator部分。实现部分我们采用三根指针,如图一所示。图1struct storage { pointer m_start = nullptr; // 指向内存的首地址 pointer m_finish = nullptr; // 指向最后一个元素的下一个位置 pointer m_end_of_storage = nullptr; // 指向内存末尾...
template<typenameT>structarray_allocator{usingvalue_type=T;usingpointer=value_type*;usingsize_type=s...
template<typenameT>structarray_allocator{usingvalue_type=T;usingpointer=value_type*;usingsize_type=s...
例3: #include<iostream>#include<vector>usingnamespacestd;voidprintVector(vector<int>& v){//利用迭代器打印 vfor(vector<int>::iterator it = v.begin(); it != v.end(); ++it){cout << *it <<" ";}cout << endl;}voidtext01(){vector<int> v1;for(inti =0; i <5; ++i){v1.pu...
运行vs低版本转高版本，std::getline报错，如下 提示 error C2027: 使用了未定义类型“std::basic...
template <class T> struct CustomAllocator { typedef T value_type; T* allocate(std::size_t n) { return new T[n]; } void deallocate(T* p, std::size_t n) { delete[] p; } }; std::vector<int, CustomAllocator<int>> vec;Code language: C++ (cpp) In practice, a custom allocator...
(588): message : see reference to function template instantiation ‘std::_List_node_emplace_op2<std::allocator<std::_List_node<std::pair<const int,X>,std::_Default_allocator_traits<_Alloc>::void_pointer>>>::_List_node_emplace_op2<const std::pair<const int,X>...
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3) the rename/allocator unit 452 performs the allocation stage 408 and renaming stage 410; 4) the scheduler unit(s) 456 performs the schedule stage 412; 5) the physical register file(s) unit(s) 458 and the memory unit 470 perform the register read/memory read stage 414; the execution ...
还有v. insert(pointer, content),v.insert(pointer,a[2],a[4])将a[2]到a[4]三个元素插入。 6. v.pop_back() 删除容器的末元素,并不返回该元素。 7.v.erase(pointer1,pointer2) 删除pointer1到pointer2中间(包括pointer1所指)的元素。