proxy objectassert(la.begin()==al.begin());// guaranteed: backing array is the samestd::initializer_list<int>il{-3,-2,-1};assert(il.begin()[2]==-1);// note the replacement for absent operator[]il=al;// shallow-
为了更深入地了解initializer_list的实现细节，我们可以查看其定义文件。在C++的标准库中，initializer_list的定义如下：```cpp template class initializer_list { public:typedef \_E value\_type;typedef const \_E& reference;typedef const \_E& const\_reference;typedef size\_t size\_type;typedef const \...
Parameters (none) Return value A pointer to the first element in the initializer list Complexity Constant Example See also end returns a pointer to one past the last element (public member function)
cppreference.com Create account Page Discussion Standard revision:DiffC++98/03C++11C++14C++17C++20C++23C++26 View Edit History C++ Utilities library std::initializer_list constT*begin()constnoexcept; (since C++11) (until C++14) constexprconstT*begin()constnoexcept; ...
From cppreference.com <cpp |utility |initializer list Compiler support Freestanding and hosted Language Standard library Standard library headers Named requirements Feature test macros(C++20) Language support library Concepts library(C++20)
On line 1: As noted above, we have to use angled brackets to denote what type of element we expect inside the list. In this case, because this is an IntArray, we’d expect the list to be filled with int. Note that we don’t pass the list by const reference. Much like std::str...
we can use non-member functions likestd::empty, use it in a range-based for loop, and check itssize(). Please notice that there’s no need to passconst initializer_list<int>&(aconstreference) as the initializer list is a lightweight object, so passing by value doesn’t copy the refe...
c++中的std：：stod， stCPP程序说明std:：stod（）：stof， std：：stoldstd::async是一个函数模板...
问std::initializer_list、带括号的初始化和标头EN版权声明：本文内容由互联网用户自发贡献，该文观点仅...
cppreference.com Page Discussion std::end(std::initializer_list)C++ Utilities library std::initializer_list Defined in header <initializer_list> template< class E > const E* end( std::initializer_list<E> il ) noexcept; (since C++11) (constexpr since C++14)...