MoreEnumerableFallbackIfEmptyT Method (IEnumerableT, IEnumerableT) |
Returns the elements of a sequence, but if it is empty then
returns an altenate sequence of values.
Namespace:
MoreLinq
Assembly:
MoreLinq (in MoreLinq.dll) Version: 2.1.0
Syntax 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>
Parameters
- source
- Type: System.Collections.GenericIEnumerableT
The source sequence. - fallback
- Type: System.Collections.GenericIEnumerableT
The alternate sequence that is returned
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