Writing Your Own Algorithm - C++ template

C++ examples for template:template function

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Description

Writing Your Own Algorithm

Demo Code

#include <iostream>
#include <istream>
#include <iterator>
#include <string>
#include <functional>
#include <vector>
#include <list>

using namespace std;

template<typename C>
void printContainer(const C& c, char delim = ',', ostream& out = cout) {
   printRange(c.begin(), c.end(), delim, out);
}

template<typename Fwd>
void printRange(Fwd first, Fwd last, char delim = ',', ostream& out = cout) {
   out << "{";
   while (first != last) {
      out << *first;//from  ww  w  .ja v a 2  s.  c  o m
      if (++first != last)
         out << delim << ' ';
   }
   out << "}" << endl;
}


template<typename In, typename Out, typename UnPred>
Out copyIf(In first, In last, Out result, UnPred pred) {
   for ( ;first != last; ++first)
      if (pred(*first))
         *result++ = *first;
   return(result);
}

int main() {
   cout << "Enter a series of strings: ";
   istream_iterator<string> start(cin);
   istream_iterator<string> end; // This creates a "marker"
   vector<string> v(start, end);

   list<string> lst;

   copyIf(v.begin(), v.end(), back_inserter<list<string> >(lst),
      bind2nd(less<string>(), "cookie"));

   printContainer(lst);
}

Result


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