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)
Syntax
'Declaration
<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
)
[ExtensionAttribute]
public:
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
Parameters
- source
Type: System.IObservable<TSource>
- function
Type: System.Func<IObservable<TSource>, IObservable<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
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.