array构造函数使用CTAD从第一个输入中推断类型,从输入的数量中推断大小。其余是不言自明的。如果必须显式指定类型,则可以使用to_array来代替构造函数:
由于std::vector有initializer_list constructor,所以你可以直接使用vector自己的initializer_list constructor MyArray(conststd::initializer_list<T>& x): m_Array(x)//let vector constructor handle population of mArray {} 由于initializer_list自己实现了begin(),end(),因此可以使用range-based for迭代initializer...
typenamebinary_t::subtype_typesubtype){autores=basic_json();res.m_type=value_t::binary;res.m_value=binary_t(std::move(init),subtype);returnres;}/// @brief explicitly create an array from an initializer list
cout << "&arr[" << i << "] = " << &arr[i] << endl;cout << "方法二:" << endl;for(int i = 0; i != ArraySize; i++)cout << "[arr+" << i << "] = " << arr+i << endl;cout << "方法三:" << endl;for(int i = 0,*p = arr; p != (arr+...
The latest version of this topic can be found at <initializer_list>. Defines the container template class initializer_list and several supporting templates. Syntax 复制 #include <initializer_list> Classes 展开表 initializer_list Provides access to an array of elements in which each member is ...
Defines the container class templateinitializer_listand several supporting templates. Syntax C++ #include<initializer_list> Classes ClassDescription initializer_listProvides access to an array of elements in which each member is of the specified type. ...
std::end(std::initializer_list) (C++11) specializesstd::end (function template) Free function templates overloaded forstd::initializer_list rbegincrbegin (C++14) returns a reverse iterator to the beginning of a container or array (function template) ...
// 18.9.3 initializer list range accesstemplate<class E> constexpr const E* begin(initializer_list<E> il) noexcept;template<class E> constexpr const E* end(initializer_list<E> il) noexcept;}2 An object of type initializer_list<E> provides access to an array of objects of type const E...
使用std::initializer_list An object of type std::initializer_list is a lightweight proxy object that provides access to an array of objects of type const T. A std::initializer_list object is automatically constructed when: a braced-init-list is used to list-initialize an object, where the...
Visual C++ .NET Collections Array Use variables in the initializer list #include "stdafx.h" int main() { array<int>^ array_int1 = { 0, 1, 2 }; array<int>^ array_int2 = gcnew array<int> { 0, 1, 2 }; int i = 1, j = 2, k = 3; array<int>^ array_int3 = { i, ...