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MoreEnumerableFallbackIfEmptyT Method (IEnumerableT, T)

Returns the elements of a sequence, but if it is empty then returns an alternate sequence from an array of values.

Namespace:  MoreLinq
Assembly:

MoreLinq (in MoreLinq.dll) Version: 3.0.0

Syntax 
public static IEnumerable<T> FallbackIfEmpty<T>(
	this IEnumerable<T> source,
	params T[] fallback
)

<ExtensionAttribute>
Public Shared Function FallbackIfEmpty(Of T) ( 
	source As IEnumerable(Of T),
	ParamArray fallback As T()
) As IEnumerable(Of T)
public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<T>^ FallbackIfEmpty(
	IEnumerable<T>^ source, 
	... array<T>^ fallback
)
[<ExtensionAttribute>]
static member FallbackIfEmpty : 
        source : IEnumerable<'T> * 
        fallback : 'T[] -> IEnumerable<'T>
Parameters
source
Type: System.Collections.GenericIEnumerableT
The source sequence.
fallback
Type: T
The array that is returned as the alternate sequence if source is empty.
Type Parameters
T
The type of the elements in the sequences.
Return Value

Type:

IEnumerableT

An

IEnumerableT

that containing fallback values if

source

is empty; otherwise,

source

.

Usage Note

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

IEnumerableT

. 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

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