std::experimental::ranges::IndirectUnaryInvocable, std::experimental::ranges::IndirectRegularUnaryInvocable
来自cppreference.com
                    
                                        
                    < cpp | experimental | ranges
                    
                                                            
                    |   template <class F, class I> concept bool IndirectUnaryInvocable =  | 
(范围 TS) | |
|   template <class F, class I> concept bool IndirectRegularUnaryInvocable =  | 
(范围 TS) | |
| 本节未完成 原因:添加描述和额外通告  |