[RUST/COMMON] panic! 매크로 : 에러 처리하기

icodebroker COMMON 2024-06-18

■ panic! 매크로를 사용해 에러를 처리하는 방법을 보여준다.

▶ 예제 코드 (RS)


use std::fs;
use std::io;

let result : Result<fs::File, io::Error> = fs::File::open("hello.txt");

let file : fs::File = match result
{
    Ok(file) => file,
    Err(error) =>
    {
        panic!("There was a problem opening the file : {:?}", error)
    }
};

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use std::fs;

use std::io;

let result : Result<fs::File, io::Error> = fs::File::open("hello.txt");

let file : fs::File = match result

{

Ok(file) => file,

Err(error) =>

{

panic!("There was a problem opening the file : {:?}", error)

}

};