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std::generator<Ref,V,Allocator>:: end

From cppreference.net
Utilities library
Coroutine support
Coroutine traits
Coroutine handle
No-op coroutines
Trivial awaitables
Range generators
(C++23)
Ranges library
Range adaptors
std:: default_sentinel_t end ( ) const noexcept ;
(C++23 起)

等价于 return std:: default_sentinel

返回值

一个哨兵。

示例