ファイルを作る+書く @rust
use std::fs::File; use std::io::prelude::*; fn main() -> std::io::Result<()> { let mut file = File::create("foo.txt"); file.write_all(b"Hello, world")?; OK(()) }
use std::fs::File; use std::io::prelude::*; fn main() -> std::io::Result<()> { let mut file = File::create("foo.txt"); file.write_all(b"Hello, world")?; OK(()) }