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Mention size requirement and unrealized optimizations #28

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5 changes: 5 additions & 0 deletions src/lib.rs
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,11 @@
//! - Overflow will panic in debug and wrap in release.
//! - All possible lossless conversions is possible by using `From`.
//! - When `TryFrom` is stabilized fallible conversions will also be supported.
//!
//! The uX types take up as much space as the smallest integer type that can contain them;
//! the compiler can not yet be made aware of further optimization potential,
//! and thus does not use it:
//! an `Option<u7>` still takes up two bytes.


#![cfg_attr(not(feature="std"), no_std)]
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