[ispanstream.cons] (original) (raw)

31 Input/output library [input.output]

31.9 Span-based streams [span.streams]

31.9.4 Class template basic_ispanstream [ispanstream]

31.9.4.2 Constructors [ispanstream.cons]

explicit basic_ispanstream(std::span<charT> s, ios_base::openmode which = ios_base::in);

Effects: Initializes the base class withbasic_istream<charT, traits>(addressof(sb))and sb withbasic_spanbuf<charT, traits>(s, which | ios_base​::​in) ([spanbuf.cons]).

basic_ispanstream(basic_ispanstream&& rhs);

Effects: Initializes the base class with std​::​move(rhs)and sb with std​::​move(rhs.sb).

Next, basic_istream<charT, traits>​::​set_rdbuf(addressof(sb)) is called to install the contained basic_spanbuf.

template<class ROS> explicit basic_ispanstream(ROS&& s)

Effects: Let sp be std​::​span<const charT>(std​::​forward<ROS>(s)).

Equivalent to:basic_ispanstream(std::span<charT>(const_cast<charT*>(sp.data()), sp.size()))