(C++) std::find_if

 

STL algorithm for searching an elements in a container, satisfying a certain predicate.

 

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#include <cassert> #include <iterator> #include <vector> int main() {   typedef std::vector<int>::const_iterator Iterator;   std::vector<int> v;   v.push_back(-2);   v.push_back(-1);   v.push_back( 0);   v.push_back( 1);   v.push_back( 2);   //Find the first element in v that has an integer value bigger then zero   const Iterator result     = std::find_if(v.begin(), v.end(),       std::bind2nd(std::greater<int>(), 0));   assert(result == v.end() && "A result is found");   assert(*result > 0 && "The result found is valid"); }