ILookup<TKey,TElement> Interface
Defines an indexer, size property, and Boolean search method for data structures that map keys to IEnumerable<T> sequences of values.
Spring.Collections.IEnumerable
Spring.Collections.IEnumerable<T>
Spring.Collections.ILookup<TKey,TElement>
Spring.Collections.Extensions.TLookup<TKey,TElement>
type ILookup<TKey, TElement> = interface(IEnumerable<IGrouping<TKey, TElement>>) ['{B2380533-F2B1-465B-84B2-97FA79A6EE09}'] end;
Type Parameters
- TKey
- The type of the keys in the ILookup<TKey, TElement>.
- TElement
- The type of the elements in the IEnumerable<T> sequences that make up the values in the ILookup<TKey, TElement>.
The ILookup<TKey,TElement> type exposes the following members.
| Name | Description | |
|---|---|---|
 | Comparer | Gets the assigned comparer. If not comparer was assigned it returns the default comparer. (Inherited from IEnumerable<T>.) |
| Count | Returns the number of elements in a sequence. (Inherited from IEnumerable.) |
| ElementType | Returns the type of the elements in the sequence. (Inherited from IEnumerable.) |
| IsEmpty | Determines whether the sequence contains no elements. (Inherited from IEnumerable.) |
| Item[TKey] | Gets the IEnumerable<T> sequence of values indexed by a specified key. |
| Name | Description | |
|---|---|---|
 | Aggregate(TFunc) | Applies an accumulator function over a sequence. (Inherited from IEnumerable<T>.) |
| All(TPredicate<T>) | Determines whether all elements of a sequence satisfy a condition. (Inherited from IEnumerable<T>.) |
| Any | Overloaded. Determines whether a sequence contains any elements. (Inherited from IEnumerable<T>.) |
| Any(TPredicate<T>) | Overloaded. Determines whether any element of a sequence satisfies a condition. (Inherited from IEnumerable<T>.) |
| AsObject | Returns the reference to this instance. (Inherited from IEnumerable.) |
| Concat(IEnumerable<T>) | Overloaded. Concatenates two sequences. (Inherited from IEnumerable<T>.) |
| Contains(T,IEqualityComparer) | Overloaded. Determines whether a sequence contains a specified element by using a specified IEqualityComparer<T>. (Inherited from IEnumerable<T>.) |
| Contains(T,TEqualityComparison) | Overloaded. Represents method |
| Contains(TKey) | Determines whether a specified key exists in the ILookup<TKey, TElement>. |
| ElementAt(Integer) | Returns the element at a specified index in a sequence. (Inherited from IEnumerable<T>.) |
| ElementAtOrDefault(Integer) | Overloaded. Returns the element at a specified index in a sequence or a default value if the index is out of range. (Inherited from IEnumerable<T>.) |
| ElementAtOrDefault(Integer,T) | Overloaded. Returns the element at a specified index in a sequence or the specified default value if the index is out of range. (Inherited from IEnumerable<T>.) |
| EqualsTo(IEnumerable<T>) | Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. (Inherited from IEnumerable<T>.) |
| EqualsTo(IEnumerable<T>,IEqualityComparer) | Overloaded. Determines whether two sequences are equal by comparing their elements by using a specified |
| EqualsTo(T[]) | Overloaded. Determines whether two sequences are equal by comparing the elements by using the default equality comparer for their type. (Inherited from IEnumerable<T>.) |
| First | Overloaded. Returns the first element of a sequence. (Inherited from IEnumerable<T>.) |
| First(TPredicate<T>) | Overloaded. Returns the first element in a sequence that satisfies a specified condition. (Inherited from IEnumerable<T>.) |
| FirstOrDefault | Overloaded. Returns the first element of a sequence, or a default value if the sequence contains no elements. (Inherited from IEnumerable<T>.) |
| FirstOrDefault(T) | Overloaded. Returns the first element of a sequence, or the specified default value if the sequence contains no elements. (Inherited from IEnumerable<T>.) |
| FirstOrDefault(TPredicate<T>) | Overloaded. Returns the first element of the sequence that satisfies a condition or a default value if no such element is found. (Inherited from IEnumerable<T>.) |
| FirstOrDefault(TPredicate<T>,T) | Overloaded. Returns the first element of the sequence that satisfies a condition or the specified default value if no such element is found. (Inherited from IEnumerable<T>.) |
| ForEach(TAction<T>) | Performs the specified action on each element of a sequence. (Inherited from IEnumerable<T>.) |
| GetComparer | Returns the specified comparer for this instance. (Inherited from IEnumerable<T>.) |
| GetCount | Represents method |
| GetElementType | Represents method |
| GetEnumerator | Returns an enumerator that iterates through the collection. (Inherited from IEnumerable<T>.) |
| GetIsEmpty | Represents method |
| GetItem(TKey) | Represents method |
| Last | Overloaded. Returns the last element of a sequence. (Inherited from IEnumerable<T>.) |
| Last(TPredicate<T>) | Overloaded. Returns the last element of a sequence that satisfies a specified condition. (Inherited from IEnumerable<T>.) |
| LastOrDefault | Overloaded. Returns the last element of a sequence, or a default value if the sequence contains no elements. (Inherited from IEnumerable<T>.) |
| LastOrDefault(T) | Overloaded. Returns the last element of a sequence, or the specified default value if the sequence contains no elements. (Inherited from IEnumerable<T>.) |
| LastOrDefault(TPredicate<T>) | Overloaded. Returns the last element of a sequence that satisfies a condition or a default value if no such element is found. (Inherited from IEnumerable<T>.) |
| LastOrDefault(TPredicate<T>,T) | Overloaded. Returns the last element of a sequence that satisfies a condition or the specified default value if no such element is found. (Inherited from IEnumerable<T>.) |
| Max | Overloaded. Returns the maximum value in a sequence. (Inherited from IEnumerable<T>.) |
| Max(IComparer) | Overloaded. Returns the maximum value in a sequence by using the specified IComparer<T> . (Inherited from IEnumerable<T>.) |
| Max(TComparison) | Overloaded. Represents method |
| Max(TFunc) | Overloaded. Represents method |
| Min | Overloaded. Returns the minimum value in a sequence. (Inherited from IEnumerable<T>.) |
| Min(IComparer) | Overloaded. Returns the minimum value in a sequence by using the specified IComparer<T> . (Inherited from IEnumerable<T>.) |
| Min(TComparison) | Overloaded. Represents method |
| Min(TFunc) | Overloaded. Represents method |
| Ordered | Overloaded. Sorts the elements of a sequence in ascending order using the default comparer for their type. (Inherited from IEnumerable<T>.) |
| Ordered(IComparer) | Overloaded. Sorts the elements of a sequence in ascending order using the specified IComparer<T>. (Inherited from IEnumerable<T>.) |
| Ordered(TComparison) | Overloaded. Represents method |
| Reversed | Inverts the order of the elements in a sequence. (Inherited from IEnumerable<T>.) |
| Shuffled | Returns the sequence in a shuffled order. (Inherited from IEnumerable<T>.) |
| Single | Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. (Inherited from IEnumerable<T>.) |
| Single(TPredicate<T>) | Overloaded. Returns the only element of a sequence, and throws an exception if there is not exactly one element in the sequence. (Inherited from IEnumerable<T>.) |
| SingleOrDefault | Overloaded. Returns the only element of a sequence, or a default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. (Inherited from IEnumerable<T>.) |
| SingleOrDefault(T) | Overloaded. Returns the only element of a sequence, or the specified default value if the sequence is empty; this method throws an exception if there is more than one element in the sequence. (Inherited from IEnumerable<T>.) |
| SingleOrDefault(TPredicate<T>) | Overloaded. Returns the only element of a sequence that satisfies a specified condition or a default value if no such element exists; this method throws an exception if more than one element satisfies the condition. (Inherited from IEnumerable<T>.) |
| SingleOrDefault(TPredicate<T>,T) | Overloaded. Returns the only element of a sequence that satisfies a specified condition or the specified default value if no such element exists; this method throws an exception if more than one element satisfies the condition. (Inherited from IEnumerable<T>.) |
| Skip(Integer) | Bypasses a specified number of elements in a sequence and then returns the remaining elements. (Inherited from IEnumerable<T>.) |
| SkipWhile(TFunc) | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. The element's index is used in the logic of the predicate function. (Inherited from IEnumerable<T>.) |
| SkipWhile(TPredicate<T>) | Overloaded. Bypasses elements in a sequence as long as a specified condition is true and then returns the remaining elements. (Inherited from IEnumerable<T>.) |
| Sum | Overloaded. Computes the sum of the sequence. (Inherited from IEnumerable<T>.) |
| Take(Integer) | Returns a specified number of contiguous elements from the start of a sequence. (Inherited from IEnumerable<T>.) |
| TakeWhile(TFunc) | Overloaded. Returns elements from a sequence as long as a specified condition is true. The element's index is used in the logic of the predicate function. (Inherited from IEnumerable<T>.) |
| TakeWhile(TPredicate<T>) | Overloaded. Returns elements from a sequence as long as a specified condition is true. (Inherited from IEnumerable<T>.) |
| ToArray | Creates a new array which is filled with the elements in the collection. (Inherited from IEnumerable<T>.) |
| TryGetFirst(T) | Overloaded. Try getting the first element in a sequence. (Inherited from IEnumerable<T>.) |
| TryGetFirst(T,TPredicate<T>) | Overloaded. Try getting the first element in a sequence that satisfies a specified condition. (Inherited from IEnumerable<T>.) |
| TryGetLast(T) | Overloaded. Try getting the last element in a sequence. (Inherited from IEnumerable<T>.) |
| TryGetLast(T,TPredicate<T>) | Overloaded. Try getting the last element in a sequence that satisfies a specified condition. (Inherited from IEnumerable<T>.) |
| TryGetSingle(T) | Overloaded. Try getting the only element in a sequence. (Inherited from IEnumerable<T>.) |
| TryGetSingle(T,TPredicate<T>) | Overloaded. Try getting the only element in a sequence that satisfies a specified condition. (Inherited from IEnumerable<T>.) |
| Where(TPredicate<T>) | Overloaded. Filters a sequence of values based on a predicate. (Inherited from IEnumerable<T>.) |