error_hook

This library supplements errors on a per-function basis and executes hooks.

Example

```rust use error_hook::{self, hook};

[hook(e => tracing::error!("{e}"))]

[tracing::instrument]

async fn test(a: i32, b: i32) -> errorhook::Result { a.checkedmul(b).ok_or(anyhow::anyhow!("overflow")) }

[tokio::main]

async fn main() -> anyhow::Result<()> { tracingsubscriber::fmt() .withmax_level(tracing::Level::INFO) .init();

let ans = test(888888888, 888888888).await?;
println!("{ans}");

Ok(())

} ```

output shell 2023-03-04T06:23:33.048087Z ERROR test{a=888888888 b=888888888}: example: overflow