Tools for making improved models with Qt
summary
Presents a concrete solution: a template updatable model template that runs a custom updateCollection diff algorithm (requires a stable key and a hasChanged predicate) to emit precise insert, remove and dataChanged signals instead of model resets. Bundles adjacent operations to emit fewer signals, returns counts of inserts/removals/updates, and powers a QML-friendly sort proxy model that emits row moves so ListView animations work. Works for list models, not trees; demonstrated by replacing a per-second reset process monitor and improving UX.
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