IsNull Class

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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 2.9.1

Show Uno properties and methods

Interface of IsNull

IsNull(Expression) Constructor uno

Inherited from UnaryOperator

Compute(object) : object uno

IsOperandOptional : bool uno

OnLostOperand(IListener) uno

OnNewOperand(IListener, object) uno

Operand : Expression uno

Inherited from ComputeExpression

GetArgument(int) : Expression uno

Name : string uno

TryCompute(Argument[], object) : bool uno

Should calculate the resulting value from the provided arguments.

Inherited from Expression

SourceFileName : string ux

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SourceLineNumber : int ux

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Subscribe(IContext, IListener) : IDisposable uno

See IExpression.Subscribe for docs.

Inherited from object

Equals(object) : bool uno

GetHashCode : int uno

GetType : Type uno

ToString : string uno

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

IExpression uno

ISourceLocation uno

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