id-arena

Released 2026-01-14

• Fix no-std build.

Released 2019-02-15.

• Make sure our rayon parallel iterators are exported. Previously instances of them were returned by pub methods but the types themselves were not exported.

Released 2019-01-30.

• Add the Arena::alloc_with_id method. This is better than using Arena::next_id directly most of the time (but is also not quite as flexible). See #9 and #10.

Released 2019-01-25.

• Added optional support for rayon parallel iteration. Enable the rayon Cargo feature to get access.

Released 2019-01-09.

• Implemented Ord and PartialOrd for Id<T>.
• Added an Arena::with_capacity constructor.
• Added Arena::next_id to get the id that will be used for the next allocation.

Released 2018-11-28.

• Introduces the ArenaBehavior trait, which allows one to customize identifier types and do things like implement space optimizations or use identifiers for many arenas at once.
• Implements Clone, PartialEq and Eq for arenas.

Released 2018-11-25.

• Id<T> now implements Send and Sync
• The PartialEq implementation for Id<T> now correctly checks that two ids are for the same arena when checking equality.