MoreEnumerableGroupAdjacentTSource, TKey Method (IEnumerableTSource, FuncTSource, TKey, IEqualityComparerTKey) | 
 
            Groups the adjacent elements of a sequence according to a 
            specified key selector function and compares the keys by using a 
            specified comparer.
            
 
    Namespace: 
   MoreLinq
    Assembly:
   MoreLinq (in MoreLinq.dll) Version: 2.5.0
Syntaxpublic static IEnumerable<IGrouping<TKey, TSource>> GroupAdjacent<TSource, TKey>(
	this IEnumerable<TSource> source,
	Func<TSource, TKey> keySelector,
	IEqualityComparer<TKey> comparer
)
<ExtensionAttribute>
Public Shared Function GroupAdjacent(Of TSource, TKey) ( 
	source As IEnumerable(Of TSource),
	keySelector As Func(Of TSource, TKey),
	comparer As IEqualityComparer(Of TKey)
) As IEnumerable(Of IGrouping(Of TKey, TSource))
public:
[ExtensionAttribute]
generic<typename TSource, typename TKey>
static IEnumerable<IGrouping<TKey, TSource>^>^ GroupAdjacent(
	IEnumerable<TSource>^ source, 
	Func<TSource, TKey>^ keySelector, 
	IEqualityComparer<TKey>^ comparer
)
[<ExtensionAttribute>]
static member GroupAdjacent : 
        source : IEnumerable<'TSource> * 
        keySelector : Func<'TSource, 'TKey> * 
        comparer : IEqualityComparer<'TKey> -> IEnumerable<IGrouping<'TKey, 'TSource>> 
Parameters
- source
 - Type: System.Collections.GenericIEnumerableTSource
A sequence whose elements to group. - keySelector
 - Type: SystemFuncTSource, TKey
A function to extract the key for each 
            element. - comparer
 - Type: System.Collections.GenericIEqualityComparerTKey
An IEqualityComparerT to 
            compare keys. 
Type Parameters
- TSource
 - The type of the elements of 
            source.
 - TKey
 - The type of the key returned by 
            keySelector.
 
Return Value
Type: 
IEnumerableIGroupingTKey, 
TSourceA sequence of groupings where each grouping
            (
IGroupingTKey, TElement) contains the key
            and the adjacent elements in the same order as found in the 
            source 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).
Remarks
            This method is implemented by using deferred execution and 
            streams the groupings. The grouping elements, however, are 
            buffered. Each grouping is therefore yielded as soon as it 
            is complete and before the next grouping occurs.
            
See Also