Returns false if the value exists and is non-null, true otherwise.

This is the same condition used in the NullCoalesce operator:

expr ?? res

Is the same as:

isNull(expr) ? res : expr

Location

Namespace
Fuse.Reactive
Package
Fuse.Reactive.Expressions 1.9.0

Interface of IsNull

Inherited from UnaryOperator

Inherited from ComputeExpression

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