generate_n()

generate_n() fills a sequence by applying n successive invocations of the generator.

#include <algorithm> 


class gen_by_two { 


public: 


   gen_by_two( int seed = 0 ) : _seed( seed ){} 


   int operator()() { return _seed += 2; } 


private: 


   int _seed; 


}; 


vector<int> ivec( 10 ); 





// fills ivec: 102 104 106 108 110 112 114 116 118 120 


generate_n( ivec.begin(), ivec.size(), gen_by_two(100) );