https://github.com/znx3p0/io_err

https://github.com/znx3p0/io_err

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/znx3p0/io_err
• Owner: znx3p0
• Created: 2022-05-23T18:58:37.000Z (almost 3 years ago)
• Default Branch: master
• Last Pushed: 2022-05-23T19:02:34.000Z (almost 3 years ago)
• Last Synced: 2025-02-09T08:17:10.192Z (3 months ago)
• Language: Rust
• Size: 5.86 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# io_err

A serializable version of `std::io::Error` and `std::io::Result` with much better ergonomics.

```rust

fn test() -> Result<()> {

    let res: u32 = may_error()?;

    let another: Result<(), &'static str> = Err("error!");

    let map_another: Result<()> = another.map_err(err!(@other))?;

    err!((other, "error"))?; // == err!(("error"))?;

    Ok(())

}

fn return_error() -> Result<()> {

    err!(("unknown")) // == Err(err!("unknown"))

}

fn return_error_with_kind() -> Result<()> {

    err!((permission_denied, "unknown")) // == Err(err!(permission_denied, "unknown"))

}

fn simple_error() -> Result<()> {

    let err: Error = err!("unknown");

    Err(err)

}

fn simple_error_with_kind() -> Result<()> {

    let err: Error = err!(permission_denied, "unknown");

    Err(err)

}

fn errors() -> Result<()> {

    let err = "unknown";

    bail!("error {:?}", err); // == return err!(("error {:?}", err));

    Ok(())

}

fn permission_denied() -> Result<()> {

    let err = "denied >:(";

    bail!(permission_denied, "error {:?}", err);

    Ok(())

}

```