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deduction guides for std::stop_callback

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定义于头文件 <stop_token>
template < class Callback >
stop_callback ( std:: stop_token , Callback ) - > stop_callback < Callback > ;
(C++20 起)

std::stop_callback 提供了一个 推导指南 ,允许从可调用类型的参数进行推导。

示例