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std::initializer_list<T>:: begin

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< cpp ‎ | utility ‎ | initializer list

Utilities library

Language support

Type support (basic types, RTTI)

Library feature-test macros (C++20)

Program utilities

Variadic functions

initializer_list

(C++11)

is_constant_evaluated

(C++20)

is_within_lifetime

(C++26)

source_location

(C++20)

Coroutine support (C++20)

Contract support (C++26)

Three-way comparison

three_way_comparable three_way_comparable_with

(C++20) (C++20)

strong_ordering

(C++20)

(C++20)

partial_ordering

(C++20)

common_comparison_category

(C++20)

compare_three_way_result

(C++20)

compare_three_way

(C++20)

(C++20)

(C++20)

(C++20)

compare_strong_order_fallback

(C++20)

compare_weak_order_fallback

(C++20)

compare_partial_order_fallback

(C++20)

is_eq is_lt is_lteq

(C++20) (C++20) (C++20)

is_neq is_gt is_gteq

(C++20) (C++20) (C++20)

General utilities

Function objects
Bit manipulation (C++20)
C-style bit manipulation (C++26)
bitset
hash (C++11)

Relational operators (deprecated in C++20)

rel_ops::operator!= rel_ops::operator>

rel_ops::operator<= rel_ops::operator>=

Integer comparison functions

cmp_equal cmp_less cmp_less_than

(C++20) (C++20) (C++20)

cmp_not_equal cmp_greater cmp_greater_than

(C++20) (C++20) (C++20)

(C++20)

Swap and type operations

swap
ranges::swap (C++20)
exchange (C++14)
declval (C++11)
to_underlying (C++23)

forward (C++11)
forward_like (C++23)
move (C++11)
move_if_noexcept (C++11)
as_const (C++17)

Common vocabulary types

pair
tuple (C++11)
optional (C++17)
any (C++17)
variant (C++17)

tuple_size (C++11)
tuple_element (C++11)
apply (C++17)
make_from_tuple (C++17)
expected (C++23)

const T * begin ( ) const noexcept ;		(C++11부터) (C++14부터 constexpr)

초기화 목록의 첫 번째 요소에 대한 포인터를 얻습니다.

초기화 목록이 비어 있는 경우, begin() 와 end() 의 값은 지정되지 않지만 동일합니다.

목차

매개변수

(없음)

반환값

초기화자 목록의 첫 번째 요소에 대한 포인터

복잡도

상수

예제

이 코드 실행

#include <initializer_list>
int main()
{
    static constexpr auto il = {42, 24};
    static_assert(*il.begin() == 0x2A);
    static_assert(il.begin()[1] == 030);
}

참고 항목

end	마지막 요소의 다음 위치를 가리키는 포인터를 반환합니다 (public member function)