M_CodeJam_Collections_EnumerableExtensions_ToHashSet__2

EnumerableExtensions.ToHashSet(T, TKey) Method (IEnumerable(T), Func(T, TKey))

Creates a HashSet(T) from an IEnumerable(T).

Namespace: CodeJam.Collections
Assembly: CodeJam (in CodeJam.dll) Version: 2.1.0.0

Syntax

C#

public static HashSet<TKey> ToHashSet<T, TKey>(
	this IEnumerable<T> source,
	Func<T, TKey> keySelector
)

VB

<ExtensionAttribute>
Public Shared Function ToHashSet(Of T, TKey) ( 
	source As IEnumerable(Of T),
	keySelector As Func(Of T, TKey)
) As HashSet(Of TKey)

F#

[<ExtensionAttribute>]
static member ToHashSet : 
        source : IEnumerable<'T> * 
        keySelector : Func<'T, 'TKey> -> HashSet<'TKey> 

Parameters

 

source

Type: System.Collections.Generic.IEnumerable(T)
The IEnumerable(T) to create a HashSet(T) from.

keySelector

Type: System.Func(T, TKey)
A function to extract a key from each element.

Type Parameters

 

T

The type of the elements of source.

TKey

The type of the key returned by keySelector.

Return Value

Type: HashSet(TKey)
A HashSet(T) that contains keys from the input sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable(T). 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

Reference

EnumerableExtensions Class
ToHashSet Overload
CodeJam.Collections Namespace