#[derive(Read, Write, Seek, BufRead)] for enums.
APACHE-2.0 License
#[derive(Read, Write, Seek, BufRead)] for enums.
Add this to your Cargo.toml
:
[dependencies]
io-enum = "1"
use std::{
fs::File,
io::{self, Write},
path::Path,
};
use io_enum::*;
#[derive(Read, Write, Seek, BufRead)]
enum Either<A, B> {
A(A),
B(B),
}
fn func(path: Option<&Path>) -> impl Write {
if let Some(path) = path {
Either::A(File::open(path).unwrap())
} else {
Either::B(io::stdout())
}
}
See auto_enums crate for how to automate patterns like this.
Read
- example | generated code
BufRead
- example | generated code
Write
- example | generated code
Seek
- example | generated code
Licensed under either of Apache License, Version 2.0 or MIT license at your option.
Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.