Module backend 

Pluggable backend traits for reactive data structures (M5.A — D178).

Each structure delegates storage to a backend trait. Default implementations use Vec<T> / HashMap<K, V>. imbl-backed persistent backends are deferred until bench evidence justifies (D178).

Structs

HashMapBackend

Default HashMap-backed map backend.

IndexRow

A row in a reactive index: primary key, secondary sort key, value.

VecIndexBackend

Default sorted-Vec + HashMap-backed index backend.

VecListBackend

Default Vec-backed list backend.

VecLogBackend

Default Vec-backed log backend with optional ring-buffer cap.

Traits

IndexBackend

Storage backend for crate::ReactiveIndex.

ListBackend

Storage backend for crate::ReactiveList.

LogBackend

Storage backend for crate::ReactiveLog.

MapBackend

Storage backend for crate::ReactiveMap.