LinqExtensions.Lookup<TKey, T> Class

Defines an indexer, size property, and Boolean search method for LinqExtensions.Grouping<TKey, T> objects.

Definition

Namespace: Extreme.DataAnalysis.Linq
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

public class Lookup<TKey, T> : IEnumerable<LinqExtensions.Grouping<TKey, T>>, 
	IEnumerable

Visual Basic

Public Class Lookup(Of TKey, T)
	Implements IEnumerable(Of LinqExtensions.Grouping(Of TKey, T)), 
	IEnumerable

C++/CLI

generic<typename TKey, typename T>
public ref class Lookup : IEnumerable<LinqExtensions.Grouping<TKey, T>^>, 
	IEnumerable

type Lookup<'TKey, 'T> = 
    class
        interface IEnumerable<LinqExtensions.Grouping<'TKey, 'T>>
        interface IEnumerable
    end

Constructs a new lookup object.

Count	Gets the number of key/value collection pairs.
Item	Gets the sequence of values indexed by the specified key.

Contains	Determines whether a specific key exists in the lookup.
Equals	Determines whether the specified object is equal to the current object. (Inherited from Object)
Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object)
GetEnumerator
GetHashCode	Serves as the default hash function. (Inherited from Object)
GetType	Gets the Type of the current instance. (Inherited from Object)
MemberwiseClone	Creates a shallow copy of the current Object. (Inherited from Object)
ToString	Returns a string that represents the current object. (Inherited from Object)

Group<LinqExtensions.Grouping<TKey, T>>	Returns a grouping by the unique elements in a sequence. (Defined by Grouping)
Group<LinqExtensions.Grouping<TKey, T>>	Returns a grouping by the unique elements in a sequence using the specified comparer to determine equality. (Defined by Grouping)
Sum<LinqExtensions.Grouping<TKey, T>>	Computes the sum of the sequence of values. (Defined by ArrayMath)
Sum<LinqExtensions.Grouping<TKey, T>, U>	Computes the sum of the sequence of values that are obtained by invoking a transform function on each element of the input sequence. (Defined by ArrayMath)