ees: Simple Error-Handling Library

ees is a simple error-handling library. Rather than provide its own error-related types, it uses std::error::Error and provides a number of convenience functions.

```rust use std::io::Read;

// Use ees::Error for arbitrary owned errors fn dowork() -> Result<(), ees::Error> { let mut file = std::fs::File::open("hello world")?; let mut contents = String::new(); file.readtostring(&mut contents)?; if contents.isempty() { // Construct an error on the fly with a given message ees::bail!("file is empty"); } Ok(()) }

// ees::ErrorRef<'> represents an arbitrary borrowed error fn takeanerror(error: ees::ErrorRef<'>) { // Print the complete error chain println!("Error: {}", ees::printerrorchain(error)); }

// Use ees::MainResult to automatically create nicely-formatted error messages // in the main() function fn main() -> ees::MainResult { do_work()?; Ok(()) } ```