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operator<<,>>(std::{{{1}}})

من cppreference.com
 
 
 
 
template< class CharT, class Traits, class ResultType,

          ... >
std::basic_ostream<CharT,Traits>&
    operator<<( std::basic_ostream<CharT,Traits>& ost,

                const {{{1}}}<...>& e );
(1) (since C++11)
template< class CharT, class Traits, class ResultType,

          ... >
std::basic_istream<CharT,Traits>&
    operator>>( std::basic_istream<CharT,Traits>& ist,

                {{{1}}}<...>& e );
(2) (since C++11)
1) Serializes the internal state of the pseudo-random number engine ‎e‎ as a sequence of decimal numbers separated by one or more spaces, and inserts it to the stream ‎ost‎. The fill character and the formatting flags of the stream are ignored and unaffected.
2) Restores the internal state of the pseudo-random number engine ‎e‎ from the serialized representation, which was created by an earlier call to ‎operator<<‎ using a stream with the same imbued locale and the same ‎CharT‎ and ‎Traits‎. If the input cannot be deserialized, ‎e‎ is left unchanged and ‎failbit‎ is raised on ‎ist‎

If a textual representation is written using os << x and that representation is restored into the same or a different object ‎y‎ of the same type using is >> y, then x==y.

The textual representation is written with os.''fmtflags'' set to ios_base::dec|ios_base::left and the fill character set to the space character. The textual representation of the engine's internal state is a set of decimal numbers separated by spaces.

محتويات

[تعديل] Parameters

ost - output stream to insert the data to
ist - input stream to extract the data from
e - pseudo-random number engine

[تعديل] Return value

1) ‎ost‎
2) ‎ist‎

[تعديل] Complexity

[تعديل] Exceptions

1) (none)
2) May throw std::ios::failure when setting ‎failbit‎