ParallelEnumerable.Select Method
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Projects in parallel each element of a sequence into a new form.
| Select<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,Int32,TResult>) |
Projects in parallel each element of a sequence into a new form by incorporating the element's index. |
| Select<TSource,TResult>(ParallelQuery<TSource>, Func<TSource,TResult>) |
Projects in parallel each element of a sequence into a new form. |
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects in parallel each element of a sequence into a new form by incorporating the element's index.
public:
generic <typename TSource, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ Select(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, int, TResult> ^ selector);public static System.Linq.ParallelQuery<TResult> Select<TSource,TResult>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,int,TResult> selector);static member Select : System.Linq.ParallelQuery<'Source> * Func<'Source, int, 'Result> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function Select(Of TSource, TResult) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, Integer, TResult)) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of the elements of source.
- TResult
The type of elements returned by selector.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to invoke a transform function on.
Returns
A sequence whose elements are the result of invoking the transform function on each element of source, based on the index supplied to selector.
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.
More than Int32.MaxValue elements are enumerated by the query. This condition might occur in streaming scenarios.
See also
Applies to
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
- Source:
- ParallelEnumerable.cs
Projects in parallel each element of a sequence into a new form.
public:
generic <typename TSource, typename TResult>
[System::Runtime::CompilerServices::Extension]
static System::Linq::ParallelQuery<TResult> ^ Select(System::Linq::ParallelQuery<TSource> ^ source, Func<TSource, TResult> ^ selector);public static System.Linq.ParallelQuery<TResult> Select<TSource,TResult>(this System.Linq.ParallelQuery<TSource> source, Func<TSource,TResult> selector);static member Select : System.Linq.ParallelQuery<'Source> * Func<'Source, 'Result> -> System.Linq.ParallelQuery<'Result><Extension()>
Public Function Select(Of TSource, TResult) (source As ParallelQuery(Of TSource), selector As Func(Of TSource, TResult)) As ParallelQuery(Of TResult)Type Parameters
- TSource
The type of the elements of source.
- TResult
The type of elements returned by selector.
Parameters
- source
- ParallelQuery<TSource>
A sequence of values to invoke a transform function on.
- selector
- Func<TSource,TResult>
A transform function to apply to each element.
Returns
A sequence whose elements are the result of invoking the transform function on each element of source.
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
.NET 10 and other versions
| Product | Versions |
|---|---|
| .NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9, 10 |
| .NET Framework | 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| .NET Standard | 2.0, 2.1 |
| UWP | 10.0 |
.NET feedback
.NET is an open source project. Select a link to provide feedback: