Rust match keyword
[Python Structural Pattern Matching](https://texonom.com/python-structural-pattern-matching-40ea619c93b5457d970895492adf6904) 


### 강력한 흐름 제어 연산자
value 가지는 int enum 은 안되고 할당안된 값의 enum만 가능 

[Rust TryFrom](https://texonom.com/rust-tryfrom-3026dde54d34407885657894d00b15a7)





> [The Rust Programming Language](https://doc.rust-lang.org/book/ch06-02-match.html)

> [The Rust Programming Language](https://rinthel.github.io/rust-lang-book-ko/ch06-02-match.html)





