Created
January 18, 2019 14:01
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| #include <iostream> | |
| #include <string> | |
| struct BordelLand { | |
| BordelLand(bool x): tag(Graffiti::A), a(x) {} | |
| BordelLand(char x): tag(Graffiti::B), b(x) {} | |
| BordelLand(float x): tag(Graffiti::C), c(x) {} | |
| template <typename F> void pattern_a(F f) { | |
| if (tag == Graffiti::A) { | |
| auto& ref = a; | |
| f(ref); | |
| } | |
| } | |
| template <typename F> void pattern_b(F f) { | |
| if (tag == Graffiti::B) { | |
| auto& ref = b; | |
| f(ref); | |
| } | |
| } | |
| template <typename F> void pattern_c(F f) { | |
| if (tag == Graffiti::C) { | |
| auto& ref = c; | |
| f(ref); | |
| } | |
| } | |
| private: | |
| enum Graffiti { A, B, C } tag; | |
| union { | |
| bool a; | |
| char b; | |
| float c; | |
| }; | |
| }; | |
| int main() { | |
| return 0; | |
| } |
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