Last active
May 23, 2023 17:35
-
-
Save madbence/5639239 to your computer and use it in GitHub Desktop.
Infix operators in C++ :o
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#include <iostream> | |
using namespace std; | |
template<class T> | |
struct Bind { | |
T first; | |
T (*fun)(const T&, const T&); | |
Bind(T (*fun)(const T&, const T&), T f):first(f), fun(fun){} | |
T operator()(const T& o) { return fun(first, o); } | |
}; | |
template<class T> | |
struct Infix { | |
T (*fun)(const T&, const T&); | |
Infix(T (*fun)(const T&, const T&)):fun(fun){} | |
}; | |
template<class T> | |
struct Infix2 { | |
Bind<T> fun; | |
Infix2(const Bind<T>& f):fun(f){} | |
T operator|(const T& t) { return fun(t); } | |
}; | |
template<class T> | |
Infix2<T> operator|(const T& t, const Infix<T>& op) { | |
return Infix2<T>(Bind<T>(op.fun, t)); | |
} | |
int mul(const int& a, const int& b) { return a*b; } | |
int main() | |
{ | |
Infix<int> x(mul); | |
cout << (2 |x| 2) << endl; //4 | |
return 0; | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment