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.
Namespace: MoreLinqAssembly: MoreLinq (in MoreLinq.dll) Version: 3.4.0+b99a6a8cc504caf2d48372fe54a2f8116c59cd0c
public static IEnumerable<T> FallbackIfEmpty<T>(
this IEnumerable<T> source,
IEnumerable<T> fallback
)
<ExtensionAttribute>
Public Shared Function FallbackIfEmpty(Of T) (
source As IEnumerable(Of T),
fallback As IEnumerable(Of T)
) As IEnumerable(Of T)
public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<T>^ FallbackIfEmpty(
IEnumerable<T>^ source,
IEnumerable<T>^ fallback
)
[<ExtensionAttribute>]
static member FallbackIfEmpty :
source : IEnumerable<'T> *
fallback : IEnumerable<'T> -> IEnumerable<'T>
- source IEnumerable<T>
- The source sequence.
- fallback IEnumerable<T>
- The alternate sequence that is returned
if source is empty.
- T
- The type of the elements in the sequences.
IEnumerable<T>
An
IEnumerable<T> that containing fallback values
if
source is empty; otherwise,
source.
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).