Rust study : closure capturing

closure_capturing.rs

/*
The rust by example ko https://hanbum.gitbooks.io/rustbyexample/content/fn/closures/capture.html
compiled on https://play.rust-lang.org/
result :
*/

fn main()
{
    use std::mem;
    
    let color = "green";
    let print = || println!("color: {}", color);
    
    print();
    print();
    
    let mut count = 0;
    
    let mut inc = || {
        count += 1;
        println!("count : {}", count);
    };
    
    inc();
    inc();
    
    // 복사가 아닌 타입
    let movable = Box::new(3);
    
    let consume = || {
        println!("movable : {:?}", movable);
        mem::drop(movable);
    };
    consume();
    // 컴파일 에러
    //consume();
}