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Class Promise<T>

Encapsulates value that must be defined later. Promises can used to to pass introduced declarations to templates as arguments when these declarations have not been introduced yet, resolving a chicken-or-egg situation. When objects of type IPromise are passed to a template, the template will automatically receive its resolved Value instead of the IPromise object.

Inheritance
Promise<T>
Implements
Namespace: Metalama.Framework.Utilities
Assembly: Metalama.Framework.dll
Syntax
[CompileTime]
public sealed class Promise<T> : IPromise<T>, IPromise
Type Parameters
Name Description
T

Constructors

Name Description
Promise()

Properties

Name Description
Exception

Gets the Exception that the promise resulted in, if IsFaulted is true.

IsFaulted

Gets a value indicating whether the promise is faulted. In this case, the Exception property is set.

IsResolved

Gets a value indicating whether the Value setter has been successfully invoked.

Value

Gets or sets the deferred value. Getting the property throws an InvalidOperationException if it has not been set before.

Methods

Name Description
SetException(Exception)

Sets the Exception in which the promise resulted and sets the IsFaulted property to true.

Extension Methods