SelectMany Method

SelectMany<TCollection, TResult>(Expression<Func<T, IObservableSource<TCollection>>>, Expression<Func<T, TCollection, TResult>>)

Projects each element of this view to a collection of collections, flattens the resulting collections into one collection, and invokes a result selector function on each element therein.

Declaration

public View<TResult> SelectMany<TCollection, TResult>(Expression<Func<T, IObservableSource<TCollection>>> collectionSelector, Expression<Func<T, TCollection, TResult>> resultSelector)

Public Function SelectMany(Of TCollection, TResult)(collectionSelector As Expression(Of Func(Of T, IObservableSource(Of TCollection))), resultSelector As Expression(Of Func(Of T, TCollection, TResult))) As View(Of TResult)

Parameters

Type	Name	Description
Expression<Func<T, IObservableSource<TCollection>>>	collectionSelector	A transform function to apply to each element of this view.
Expression<Func<T, TCollection, TResult>>	resultSelector	A transform function to apply to each element of the intermediate collection.

Returns

Type	Description
View<TResult>	A view whose elements are the result of invoking the one-to-many transform function collectionSelector on each element of this view and then mapping each of those collection elements and their corresponding source element to a result element.

Type Parameters

Name	Description
TCollection	The type of the intermediate elements collected by collectionSelector.
TResult	The type of the elements of the resulting view.

SelectMany<TResult>(Expression<Func<T, IObservableSource<TResult>>>)

Projects each element of this view to a collection of TResult and flattens the resulting collections into one view.

Declaration

public View<TResult> SelectMany<TResult>(Expression<Func<T, IObservableSource<TResult>>> selector)

Public Function SelectMany(Of TResult)(selector As Expression(Of Func(Of T, IObservableSource(Of TResult)))) As View(Of TResult)

Parameters

Type	Name	Description
Expression<Func<T, IObservableSource<TResult>>>	selector	A transform function to apply to each element.

Returns

Type	Description
View<TResult>	A view whose elements are the result of invoking the one-to-many transform function on each element of this view.

Type Parameters

Name	Description
TResult	The type of the elements of the resulting view.