Pythonic한 입력법을 C++에 구현하는법

pythonic.cpp

#include <iostream>
#include <functional>
#include <vector>
#include <sstream>
#include <iterator>
#include <algorithm>
using namespace std;
template <class T, class Ty>
struct PipeOperation
{
    function<T(Ty)> func;
};
template <class T, class Ty>
T operator| (Ty S, PipeOperation<T,Ty> P){return P.func(S);}
PipeOperation<vector<string>,string> split()
{
    PipeOperation<vector<string>,string> P;
    P.func=[](string input){ vector<string> answer; stringstream ss(input); string temp; while (getline(ss, temp, ' ')) { answer.push_back(temp); } return answer; };
    return P;
}
string input()
{
	string i;
	getline(cin,i);
	return i;
}

template<class Fr, class To>
vector<To> fmap(To (*f)(Fr),vector<Fr> From)
{
	vector<To> vec;
	transform(From.begin(),From.end(),back_inserter(vec),f);
	return vec;
}

int _int(string s){return stoi(s);}

int main()
{
	for(int a:fmap(_int,input()|split()))cout << a << endl;
}