ForEach Patterns You Can Trust

Build a small array of models with id values.

Repeat the list using id: \.self and explicit ids to compare.

Add delete and move to see where ids matter.

This drill prevents glitches and state loss.

Stable ids are a tiny habit with big payoff.

Repeat until you always pick the right id.

Use Identifiable models whenever possible to avoid id drift.

Test updates by reordering the data and watching animations.