Find and iterate through a range.

find_iterate.hpp

template<class _InIt, class _Ty, class _Fn1> inline
void find_iterate(_InIt _First, _InIt _Last, const _Ty& _Val, _Fn1 _Func)
{  // find and perform a function if equals to _Val
	for (_First = std::find(_First, _Last, _Val); _First != _Last; _First = std::find(++_First, _Last, _Val))
		_Func(*_First);
}

template<class _InIt, class _Pr, class _Fn1> inline
void find_if_iterate(_InIt _First, _InIt _Last, _Pr _Pred, _Fn1 _Func)
{	// find and perform a function satisfying _Pred
	for (_First = std::find_if(_First, _Last, _Pred); _First != _Last; _First = std::find_if(++_First, _Last, _Pred))
		_Func(*_First);
}

template<class _InIt, class _Pr, class _Fn1> inline
void find_if_not_iterate(_InIt _First, _InIt _Last, _Pr _Pred, _Fn1 _Func)
{	// find and perform a function not satisfying _Pred
	for (_First = std::find_if_not(_First, _Last, _Pred); _First != _Last; _First = std::find_if_not(++_First, _Last, _Pred))
		_Func(*_First);
}

void find_iterate_tests()
{
	std::vector<int> v(10);
	std::iota(v.begin(), v.end(), 0);
	
	std::cout << "find_iterate_tests()" << std::endl;
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;

	// Transform 3 to -1
	find_iterate(v.begin(), v.end(), 3,
		[] (int& i) { i = -1; });
	
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;
}

void find_if_iterate_tests()
{
	std::vector<int> v(10);
	std::iota(v.begin(), v.end(), 0);
	
	std::cout << "find_if_iterate_tests()" << std::endl;
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;

	// Transform all odd numbers to -1
	find_if_iterate(v.begin(), v.end(),
		[] (const int& i) { return i % 2; },
		[] (int& i) { i = -1; });
	
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;
}

void find_if_not_iterate_tests()
{
	std::vector<int> v(10);
	std::iota(v.begin(), v.end(), 0);
	
	std::cout << "find_if_not_iterate_tests()" << std::endl;
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;

	// Transform all even numbers to -1
	find_if_not_iterate(v.begin(), v.end(),
		[] (const int& i) { return i % 2; },
		[] (int& i) { i = -1; });
	
	std::copy(v.begin(), v.end(), std::ostream_iterator<int>(std::cout, " "));
	std::cout << std::endl;
}