Lesson 6: Merge: Set

You used merge: 'set' with numbers before. It works exactly the same with objects - each publish replaces the entire value.

Set vs CRUD

• merge: 'crud' - the store is an array, events add/update/remove items
• merge: 'set' - the store is a single value, each event replaces it completely

Use 'set' when you have one shared object (settings, profile, game state) rather than a list of items.

Try it

The profile stream is already set up. Add two RPCs:

1. updateProfile(changes) - merges the changes into the current profile using the spread operator (profile = { ...profile, ...changes }) and publishes the full updated profile
2. resetProfile() - resets the profile to defaults and publishes

Then update the component with inputs for name, a color picker, a status dropdown, and a reset button. When User A types a name, User B sees it update live.