untagged-option

This crate provides the UntaggedOption type, an unsafe alternative to the existing Option.

In contrast to Option, UntaggedOption does not have a discriminant and thus does not know whether it contains a value or not, which makes the type very unsafe to use. It's the user's responsibility to only call UntaggedOption's methods when appropriate.

UntaggedOption is useful in contexts where the discriminant of Option would consume significant amounts of memory (eg. microcontrollers). Building a safe abstraction on top of it allows safe and resource-friendly usage.

lib.rs:

Provides an unsafe tagless alternative to Option<T> that uses less memory.

Nightly-only. #![no_std].