std::experimental::ostream_joiner<DelimT,CharT,Traits>:: ostream_joiner

From cppreference.com
ostream_joiner ( ostream_type & stream, const DelimT & delimiter ) ;
(1) (library fundamentals TS v2)
ostream_joiner ( ostream_type & stream, DelimT && delimiter ) ;
(2) (library fundamentals TS v2)
ostream_joiner ( const ostream_joiner & other ) = default ;
(3) (library fundamentals TS v2)
(implicitly declared)
ostream_joiner ( ostream_joiner && other ) = default ;
(4) (library fundamentals TS v2)
(implicitly declared)
1) Constructs the iterator with the private ostream_type * member initialized with std:: addressof ( stream ) , the private delimiter member initialized with delimiter , and the private "first element" flag set to true .
2) Constructs the iterator with the private ostream_type * member initialized with std:: addressof ( stream ) , the private delimiter member initialized with std::move(delimiter) , and the private "first element" flag set to true .
3,4) Implicitly declared copy/move constructor that copy/move constructs the private stream pointer, delimiter, and "first element" flag members.

Parameters

stream - the output stream to be accessed by this iterator
delimiter - the delimiter to be inserted into the stream in between two outputs
other - the ostream_joiner object from which this object is to be copy- or move-constructed

Example