MoreEnumerable.RankBy<TSource, TKey> Method (IEnumerable<TSource>, Func<TSource, TKey>) |
Ranks each item in the sequence in descending ordering by a specified key using a default comparer
Namespace:
MoreLinq
Assembly:
MoreLinq (in MoreLinq.dll) Version: 2.6.0
Syntaxpublic static IEnumerable<int> RankBy<TSource, TKey>(
this IEnumerable<TSource> source,
Func<TSource, TKey> keySelector
)
<ExtensionAttribute>
Public Shared Function RankBy(Of TSource, TKey) (
source As IEnumerable(Of TSource),
keySelector As Func(Of TSource, TKey)
) As IEnumerable(Of Integer)
public:
[ExtensionAttribute]
generic<typename TSource, typename TKey>
static IEnumerable<int>^ RankBy(
IEnumerable<TSource>^ source,
Func<TSource, TKey>^ keySelector
)
[<ExtensionAttribute>]
static member RankBy :
source : IEnumerable<'TSource> *
keySelector : Func<'TSource, 'TKey> -> IEnumerable<int>
Parameters
- source
- Type: System.Collections.Generic.IEnumerable<TSource>
The sequence of items to rank - keySelector
- Type: System.Func<TSource, TKey>
A key selector function which returns the value by which to rank items in the sequence
Type Parameters
- TSource
- The type of the elements in the source sequence
- TKey
- The type of the key used to rank items in the sequence
Return Value
Type:
IEnumerable<Int32>A sequence of position integers representing the ranks of the corresponding items in the sequence
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IEnumerable<TSource>. 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