Represents a reactive look-up operation, with a computed index (number) or key (string).

Index can be either a number (for IArray lookups) or a string (for IObject lookups).

Diagnostic erros are reported in the following cases:

  • If the collection is an IArray and the index is not convertible to a number.
  • If the collection is an IArray and the index is not within the bounds of the array.
  • If the colleciton is an IObject and the key is not present in the object.
  • If the collection is neither an IArray or IObject.

Location

Namespace
Fuse.Reactive
Package
Fuse.Reactive.Expressions 1.11.2

Interface of LookUp

Inherited from Expression

Inherited from object

Attached UX Attributes

GlobalKey (attached by Resource) : string ux

The ux:Global attribute creates a global resource that is accessible everywhere in UX markup.

Implemented Interfaces