Persist

Persist keeps the state of components across rebuilds of an interface. Persisting state explains the idea.

Functions

Name	Description
createStore: (scope: Scope) -> Store	Makes a store. Its values live in scope, so they last as long as it does.
Provide: (store: Store, build: (...) -> ..., ...) -> ...	Makes store the current store while build runs, and returns what it returns. The counters that name components start again, so the same code finds the same state. If build errors, the store is restored and the error is raised again.
key: (kind: string, id: string?, controlled: boolean?) -> string?	The key of a component: id, or kind and the number of the component in this build. It is nil when there is no store, or when controlled is true.
value: (scope: Scope, key: string?, slot: string, initial: any) -> Value	The value for one piece of a component's state. It is the stored one when the key has one, and a new Value otherwise. initial is only used the first time.

key and value are for the components. You only need them to give your own component this behaviour:

local key = Persist.key("MyToggle", props.Id)
local on = Persist.value(scope, key, "on", false)