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 2.9.1
Show Uno properties and methods

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