Derive Rust Errors

This crate uses macros 1.1 to derive custom errors.

Getting Started

Add this crate to your dependencies section:-

toml [dependencies] derive-error = "0.0.3"

Import it in your main.rs or lib.rs:-

```rust,ignore

[macro_use]

extern crate derive-error; ```

Deriving errors is simple. Simply create an enum for your errors as suggested in the Rust book, add short descriptions for the enum variants using doc comments, throw in a #[derive(Debug, Error)] and you are done. Here is the example in the book implemented using this library:-

```rust,norun

[derive(Debug, Error)]

enum CliError { /// IO Error Io(io::Error), /// Failed to parse the CSV file Csv(csv::Error), /// No matching cities with a population were found NotFound, } ```

This will derive implementations for Display, Error and From. See the reql crate for a real world example of how to use this crate.