Observable.CombineLatest<TFirst, TSecond, TResult> Method
Merges two observable sequences into one observable sequence by using the selector function whenever one of the observable sequences produces an element.
Namespace: System.Reactive.Linq
Assembly: System.Reactive (in System.Reactive.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function CombineLatest(Of TFirst, TSecond, TResult) ( _
first As IObservable(Of TFirst), _
second As IObservable(Of TSecond), _
resultSelector As Func(Of TFirst, TSecond, TResult) _
) As IObservable(Of TResult)
'Usage
Dim first As IObservable(Of TFirst)
Dim second As IObservable(Of TSecond)
Dim resultSelector As Func(Of TFirst, TSecond, TResult)
Dim returnValue As IObservable(Of TResult)
returnValue = first.CombineLatest(second, _
resultSelector)
public static IObservable<TResult> CombineLatest<TFirst, TSecond, TResult>(
this IObservable<TFirst> first,
IObservable<TSecond> second,
Func<TFirst, TSecond, TResult> resultSelector
)
[ExtensionAttribute]
public:
generic<typename TFirst, typename TSecond, typename TResult>
static IObservable<TResult>^ CombineLatest(
IObservable<TFirst>^ first,
IObservable<TSecond>^ second,
Func<TFirst, TSecond, TResult>^ resultSelector
)
static member CombineLatest :
first:IObservable<'TFirst> *
second:IObservable<'TSecond> *
resultSelector:Func<'TFirst, 'TSecond, 'TResult> -> IObservable<'TResult>
JScript does not support generic types and methods.
Type Parameters
- TFirst
The first type.
- TSecond
The second type.
- TResult
The type of result.
Parameters
- first
Type: System.IObservable<TFirst>
The first observable source.
- second
Type: System.IObservable<TSecond>
The second observable source.
- resultSelector
Type: System.Func<TFirst, TSecond, TResult>
The function to invoke whenever either of the sources produces an element.
Return Value
Type: System.IObservable<TResult>
An observable sequence containing the result of combining elements of both sources using the specified result selector function.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TFirst>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .