MoreEnumerableRankByTSource, TKey Method (IEnumerableTSource, FuncTSource, TKey, IComparerTKey) |
Ranks each item in a sequence using a specified key and a caller-supplied comparer
Namespace: MoreLinqAssembly: MoreLinq (in MoreLinq.dll) Version: 2.0.0
Syntax public static IEnumerable<int> RankBy<TSource, TKey>(
this IEnumerable<TSource> source,
Func<TSource, TKey> keySelector,
IComparer<TKey> comparer
)
<ExtensionAttribute>
Public Shared Function RankBy(Of TSource, TKey) (
source As IEnumerable(Of TSource),
keySelector As Func(Of TSource, TKey),
comparer As IComparer(Of TKey)
) As IEnumerable(Of Integer)
public:
[ExtensionAttribute]
generic<typename TSource, typename TKey>
static IEnumerable<int>^ RankBy(
IEnumerable<TSource>^ source,
Func<TSource, TKey>^ keySelector,
IComparer<TKey>^ comparer
)
[<ExtensionAttribute>]
static member RankBy :
source : IEnumerable<'TSource> *
keySelector : Func<'TSource, 'TKey> *
comparer : IComparer<'TKey> -> IEnumerable<int>
Parameters
- source
- Type: System.Collections.GenericIEnumerableTSource
The sequence of items to rank - keySelector
- Type: SystemFuncTSource, TKey
A key selector function which returns the value by which to rank items in the sequence - comparer
- Type: System.Collections.GenericIComparerTKey
An object that defines the comparison semantics for keys used to rank items
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:
IEnumerableInt32A 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
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