Syntax

public static class ToLookupExtensions

Methods

Name	Return Value	Summary
ToLookupMany<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>, Func<TSource, TElement>, IEqualityComparer<TKey>)	ILookup<TKey, TElement>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys. The keys are compared by using a comparer and each group's elements are projected by using a specified function. static
ToLookupMany<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>, Func<TSource, TElement>)	ILookup<TKey, TElement>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys and projects the elements for each group by using a specified function. static
ToLookupMany<TSource, TKey>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>, IEqualityComparer<TKey>)	ILookup<TKey, TSource>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys and compares the keys by using a specified comparer. static
ToLookupMany<TSource, TKey>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>)	ILookup<TKey, TSource>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys. static
ToLookupManyToMany<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>, Func<TSource, IEnumerable<TElement>>, IEqualityComparer<TKey>)	ILookup<TKey, TElement>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys. The keys are compared by using a comparer and each group's elements are projected by using a specified function that returns a sequence of elements. static
ToLookupManyToMany<TSource, TKey, TElement>(IEnumerable<TSource>, Func<TSource, IEnumerable<TKey>>, Func<TSource, IEnumerable<TElement>>)	ILookup<TKey, TElement>	Creates a lookup from a sequence according to a specified key selector function that returns a sequence of keys and projects the elements for each group by using a specified function that returns a sequence of elements. static