ParallelEnumerable.SelectMany Method
Definition
Important
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Projects in parallel each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
Overloads
| SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>) |
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. |
| SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>) |
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element. |
| SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TResult>>) |
Projects in parallel each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence. |
| SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TResult>>) |
Projects in parallel each element of a sequence to an IEnumerable<T>, and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element. |
SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>)
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein.
public:
generic <typename TSource, typename TCollection, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ SelectMany(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, System::Collections::Generic::IEnumerable<TCollection> ^> ^ collectionSelector, Func<TSource, TCollection, TResult> ^ resultSelector);public static System.Linq.ParallelQuery<TResult> SelectMany<TSource,TCollection,TResult> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,System.Collections.Generic.IEnumerable<TCollection>> collectionSelector, Func<TSource,TCollection,TResult> resultSelector);static member SelectMany : System.Linq.ParallelQuery<'Source> * Func<'Source, seq<'Collection>> * Func<'Source, 'Collection, 'Result> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function SelectMany(Of TSource, TCollection, TResult) (source As ParallelQuery(Of TSource), collectionSelector As Func(Of TSource, IEnumerable(Of TCollection)), resultSelector As Func(Of TSource, TCollection, TResult)) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of the intermediate elements collected by collectionSelector.
- TCollection
The type of elements of source.
- TResult
The type of elements in the result sequence.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to project.
- collectionSelector
- Func<TSource,IEnumerable<TCollection>>
A transform function to apply to each source element; the second parameter of the function represents the index of the source element.
- resultSelector
- Func<TSource,TCollection,TResult>
A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence.
Returns
A sequence whose elements are the result of invoking the one-to-many transform function collectionSelector on each element of source based on the index supplied to collectionSelector, and then mapping each of those sequence elements and their corresponding source element to a result element.
Exceptions
source or selector is a null reference (Nothing in Visual Basic).
The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).
More than Int32.MaxValue elements are enumerated by the query.
One or more exceptions occurred during the evaluation of the query.
See also
Applies to
SelectMany<TSource,TCollection,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TCollection>>, Func<TSource,TCollection,TResult>)
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects each element of a sequence to an IEnumerable<T>, flattens the resulting sequences into one sequence, and invokes a result selector function on each element therein. The index of each source element is used in the intermediate projected form of that element.
public:
generic <typename TSource, typename TCollection, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ SelectMany(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, int, System::Collections::Generic::IEnumerable<TCollection> ^> ^ collectionSelector, Func<TSource, TCollection, TResult> ^ resultSelector);public static System.Linq.ParallelQuery<TResult> SelectMany<TSource,TCollection,TResult> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,int,System.Collections.Generic.IEnumerable<TCollection>> collectionSelector, Func<TSource,TCollection,TResult> resultSelector);static member SelectMany : System.Linq.ParallelQuery<'Source> * Func<'Source, int, seq<'Collection>> * Func<'Source, 'Collection, 'Result> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function SelectMany(Of TSource, TCollection, TResult) (source As ParallelQuery(Of TSource), collectionSelector As Func(Of TSource, Integer, IEnumerable(Of TCollection)), resultSelector As Func(Of TSource, TCollection, TResult)) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of the intermediate elements collected by collectionSelector.
- TCollection
The type of elements of source.
- TResult
The type of elements to return.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to project.
- collectionSelector
- Func<TSource,Int32,IEnumerable<TCollection>>
A transform function to apply to each source element; the second parameter of the function represents the index of the source element.
- resultSelector
- Func<TSource,TCollection,TResult>
A function to create a result element from an element from the first sequence and a collection of matching elements from the second sequence.
Returns
A sequence whose elements are the result of invoking the one-to-many transform function collectionSelector on each element of source based on the index supplied to collectionSelector, and then mapping each of those sequence elements and their corresponding source element to a result element.
Exceptions
source or selector is a null reference (Nothing in Visual Basic).
The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).
More than Int32.MaxValue elements are enumerated by the query.
One or more exceptions occurred during the evaluation of the query.
See also
Applies to
SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,IEnumerable<TResult>>)
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects in parallel each element of a sequence to an IEnumerable<T> and flattens the resulting sequences into one sequence.
public:
generic <typename TSource, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ SelectMany(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, System::Collections::Generic::IEnumerable<TResult> ^> ^ selector);public static System.Linq.ParallelQuery<TResult> SelectMany<TSource,TResult> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,System.Collections.Generic.IEnumerable<TResult>> selector);static member SelectMany : System.Linq.ParallelQuery<'Source> * Func<'Source, seq<'Result>> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function SelectMany(Of TSource, TResult) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, IEnumerable(Of TResult))) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of elements of source.
- TResult
The type of the elements of the sequence returned by selector.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to project.
- selector
- Func<TSource,IEnumerable<TResult>>
A transform function to apply to each element.
Returns
A sequence whose elements are the result of invoking the one-to-many transform function on each element of the input sequence.
Exceptions
source or selector is a null reference (Nothing in Visual Basic).
The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).
One or more exceptions occurred during the evaluation of the query.
See also
Applies to
SelectMany<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,IEnumerable<TResult>>)
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects in parallel each element of a sequence to an IEnumerable<T>, and flattens the resulting sequences into one sequence. The index of each source element is used in the projected form of that element.
public:
generic <typename TSource, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ SelectMany(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, int, System::Collections::Generic::IEnumerable<TResult> ^> ^ selector);public static System.Linq.ParallelQuery<TResult> SelectMany<TSource,TResult> (this System.Linq.ParallelQuery<TSource> source, Func<TSource,int,System.Collections.Generic.IEnumerable<TResult>> selector);static member SelectMany : System.Linq.ParallelQuery<'Source> * Func<'Source, int, seq<'Result>> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function SelectMany(Of TSource, TResult) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Integer, IEnumerable(Of TResult))) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of elements of source.
- TResult
The type of the elements of the sequence returned by selector.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to project.
- selector
- Func<TSource,Int32,IEnumerable<TResult>>
A transform function to apply to each element.
Returns
A sequence whose elements are the result of invoking the one-to-many transform function on each element of the input sequence.
Exceptions
source or selector is a null reference (Nothing in Visual Basic).
The query was canceled with the token passed in through WithCancellation<TSource>(ParallelQuery<TSource>, CancellationToken).
More than Int32.MaxValue elements are enumerated by the query.
One or more exceptions occurred during the evaluation of the query.
