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语言支持

库功能特性测试宏 (C++20)

类型支持（基本类型、RTTI）

程序工具

可变参数函数

is_constant_evaluated

(C++20)

is_within_lifetime

(C++26)

initializer_list

(C++11)

source_location

(C++20)

协程支持 (C++20)

契约支持 (C++26)

三路比较

three_way_comparablethree_way_comparable_with

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

strong_ordering

(C++20)

weak_ordering

(C++20)

partial_ordering

(C++20)

common_comparison_category

(C++20)

compare_three_way_result

(C++20)

(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_eqis_ltis_lteq

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

is_neqis_gtis_gteq

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

通用工具

函数对象
位操纵 (C++20)
bitset
hash (C++11)

关系运算符 (C++20 弃用)

rel_ops::operator!=rel_ops::operator>

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

整数比较函数

cmp_equalcmp_lesscmp_less_than

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

cmp_not_equalcmp_greatercmp_greater_than

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

in_range

(C++20)

交换与类型运算

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)

常用词汇类型

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)

cppreference.com

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