MoreEnumerable.FallbackIfEmpty<T>(IEnumerable<T>, IEnumerable<T>) Method

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

Definition

Namespace: MoreLinq
Assembly: MoreLinq (in MoreLinq.dll) Version: 3.4.0+b99a6a8cc504caf2d48372fe54a2f8116c59cd0c
C#
public static IEnumerable<T> FallbackIfEmpty<T>(
	this IEnumerable<T> source,
	IEnumerable<T> fallback
)

Parameters

source  IEnumerable<T>
The source sequence.
fallback  IEnumerable<T>
The alternate sequence that is returned if source is empty.

Type Parameters

T
The type of the elements in the sequences.

Return Value

IEnumerable<T>
An IEnumerable<T> 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 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