Namespaces
Variants

std::experimental::ranges:: IndirectRelation

From cppreference.net
C++
Experimental
Ranges
Iterators library
Iterator concepts
Indirect callable concepts
IndirectRelation
Common algorithm requirements
Concept utilities
Iterator utilities and operations
Iterator traits
Iterator adaptors
Stream iterators
template < class F, class I1, class I2 = I1 >

concept bool IndirectRelation =
Readable < I1 > && Readable < I2 > &&
CopyConstructible < F > &&
Relation < F & , ranges :: value_type_t < I1 > & , ranges :: value_type_t < I2 > & > &&
Relation < F & , ranges :: value_type_t < I1 > & , ranges :: reference_t < I2 >> &&
Relation < F & , ranges :: reference_t < I1 > , ranges :: value_type_t < I2 > & > &&
Relation < F & , ranges :: reference_t < I1 > , ranges :: reference_t < I2 >> &&

Relation < F & , ranges :: iter_common_reference_t < I1 > , ranges :: iter_common_reference_t < I2 >> ;
(ranges TS)
本节内容尚不完整
原因：需补充说明及注意事项