 operator<<,>>(st8b7c:f320:99b9:690f:4595:cd17:293a:c069discard_block_engine)
    template< class CharT, class Traits >
friend st8b7c:f320:99b9:690f:4595:cd17:293a:c069basic_ostream<CharT,Traits>& 
    operator<<( st8b7c:f320:99b9:690f:4595:cd17:293a:c069basic_ostream<CharT,Traits>& ost, 
                discard_block_engine<>& e );
  (1)   (since C++11)     template< class CharT, class Traits >
friend st8b7c:f320:99b9:690f:4595:cd17:293a:c069basic_istream<CharT,Traits>& 
    operator>>( st8b7c:f320:99b9:690f:4595:cd17:293a:c069basic_istream<CharT,Traits>& ist, 
                discard_block_engine& e );
  (2)   (since C++11)    
1) Serializes the internal state of the pseudo-random number engine adaptor 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 adaptor 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. These function templates are not visible to ordinary unqualified or qualified lookup, and can only be found by argument-dependent lookup when st8b7c:f320:99b9:690f:4595:cd17:293a:c069discard_block_engine<Engine,p,r> is an associated class of the arguments.
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.
 Parameters    ost   -   output stream to insert the data to 
   ist   -   input stream to extract the data from 
   e   -   engine adaptor to serialize or restore 

  Return value 
1) ost
 
2) ist
  Complexity  Exceptions 
1) May throw implementation-defined exceptions. 
2) May throw st8b7c:f320:99b9:690f:4595:cd17:293a:c069ios_bas8b7c:f320:99b9:690f:4595:cd17:293a:c069failure when setting failbit.  Defect reports The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
   DR   Applied to   Behavior as published   Correct behavior 
   LWG 3519   C++11   the form of insertion and extraction operators were unspecified   specified to be hidden friends 

 

    
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