C++/STL Algorithms Modifying sequence operations/copy if
Select Numbers less than 10
<source lang="cpp">
- include <algorithm>
- include <functional>
- include <vector>
- include <iostream>
using namespace std; template <class T> void print(T& c){
for( typename T::iterator i = c.begin(); i != c.end(); i++ ){ std::cout << *i << endl; }
}
template<class InputIterator, class OutputIterator, class Predicate > OutputIterator copy_if( InputIterator start, InputIterator stop,OutputIterator out, Predicate select ){
while( start != stop ){ if( select( *start ) ) *out++ = *start; ++start; } return out;
} int main( ) {
const int numbers = 7; const int num[numbers] = { 5, 0, 3, 2, 1, 4, 7 }; vector<int> v1( num, num+numbers ); print( v1 ); vector<int> v2; copy_if( v1.begin(), v1.end(), back_inserter( v2 ),bind2nd( less<int>(), 10 ) ); print( v2 );
}
</source>