Function createScope

Creates a new Scope, optionally mapping each allocated id.

createScope(): Scope
Creates a new Scope.

Ids start at 0 and increment monotonically, so all ids the scope hands out are pairwise unique.

Returns Scope
A fresh, immutable scope handing out numeric ids
- Defined in runtime/scope.ts:111
createScope<T>(mapper: (index: number) => T): Scope<T>
Creates a new Scope with mapped values.

Ids start at 0 and increment monotonically, so all ids the scope hands out are pairwise unique; each is passed through mapper to produce the value returned. mapper runs once per id and its result is cached, so a repeat keyed lookup returns the same value (the same reference when mapper produces objects) without re-invoking it.
Type Parameters
- T
  The mapped value type
Parameters
- mapper: (index: number) => T
  Maps each monotonic id to the value handed out by the scope; invoked once per id
Returns Scope<T>
A fresh, immutable scope handing out mapped values
- Defined in runtime/scope.ts:126