Error Collection

Provides a generic error collection around dynamic errors. Powered by anyhow.

This is helpful because we often don't want to bail at the first error. For example, take a simple method:

fn setup() -> Result<()> {
    lights()?;
    camera()?;
    action()?;
    Ok(())
}

We want the error to describe how setup failed, but we return at the very first instance of an error. We are loosing valuable information during runtime that could help debug a problem!

An Errors collection can help with this problem:

fn setup() -> Result<()> {
    let mut errors = Errors::new();
    errors.collect(lights());
    errors.collect(camera());
    errors.collect(action());
    errors.as_result()
}

While this is more verbose, we now get a complete error when we have multiple failure points:

2 errors:
   1. Missing lightbulb
   2. Camera needs film

For more examples see the docs for the Errors struct.