Observable.Let<TSource, TResult> Method (IObservable<TSource>, Func<IObservable<TSource>, IObservable<TResult>>)

Namespace:  Microsoft.Phone.Reactive
Assembly:  Microsoft.Phone.Reactive (in Microsoft.Phone.Reactive.dll)


<ExtensionAttribute> _
Public Shared Function Let(Of TSource, TResult) ( _
    source As IObservable(Of TSource), _
    function As Func(Of IObservable(Of TSource), IObservable(Of TResult)) _
) As IObservable(Of TResult)
public static IObservable<TResult> Let<TSource, TResult>(
    this IObservable<TSource> source,
    Func<IObservable<TSource>, IObservable<TResult>> function
generic<typename TSource, typename TResult>
static IObservable<TResult>^ Let(
    IObservable<TSource>^ source, 
    Func<IObservable<TSource>^, IObservable<TResult>^>^ function
static member Let : 
        source:IObservable<'TSource> * 
        function:Func<IObservable<'TSource>, IObservable<'TResult>> -> IObservable<'TResult> 

Type Parameters

  • TSource
  • TResult


Return Value

Type: System.IObservable<TResult>

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Version Information

.NET for Windows Phone apps

Supported in: Windows Phone 8, Silverlight 8.1

.NET Framework Security

See Also


Observable Class

Let Overload

Microsoft.Phone.Reactive Namespace