protean

A flexible data enum guaranteeing strict variant ordering for backward-compatible binary serialization.

Why?

I found myself making a similar data type quite often for serialized communication of flexible values. At the same time, when working with serialization formats that are not self-describing, reordering enum variants is a footgun that is easy to overlook. This crate has strict tests to maintain variant ordering.

Features

• Assertions to protect backward compatibility.
• Cow for slice-type variants (Bytes and Text) for zero-copy deserialization.
• Safe methods for checked conversion of integer/float types.

License

Licensed under the MIT license.