MongoEnumerableLastNTSource, TKey, TResult Method (IEnumerableTSource, FuncTSource, TResult, TKey, FuncTKey, Int32) |
Returns the last n results.
Namespace:
MongoDB.Driver.Linq
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.22.0+75246110ed1247226fcc7f8eb2c54ffab745693e
Syntaxpublic static IEnumerable<TResult> LastN<TSource, TKey, TResult>(
this IEnumerable<TSource> source,
Func<TSource, TResult> selector,
TKey key,
Func<TKey, int> n
)
<ExtensionAttribute>
Public Shared Function LastN(Of TSource, TKey, TResult) (
source As IEnumerable(Of TSource),
selector As Func(Of TSource, TResult),
key As TKey,
n As Func(Of TKey, Integer)
) As IEnumerable(Of TResult)
[<ExtensionAttribute>]
static member LastN :
source : IEnumerable<'TSource> *
selector : Func<'TSource, 'TResult> *
key : 'TKey *
n : Func<'TKey, int> -> IEnumerable<'TResult>
Parameters
- source
- Type: System.Collections.GenericIEnumerableTSource
The source. - selector
- Type: SystemFuncTSource, TResult
The selector. - key
- Type: TKey
The key (needed to infer the key type and to determine the key serializer). - n
- Type: SystemFuncTKey, Int32
The number of results to return.
Type Parameters
- TSource
- The source type.
- TKey
- The key type.
- TResult
- The result type.
Return Value
Type:
IEnumerableTResultThe last n results.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IEnumerableTSource. 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).
See Also