 | singleSingleOrDefaultT Method |
Get the element of an IEnumerableT if it is alone, a default element if it empty, or throw exception otherwise.
Namespace: WhetStone.Looping
Assembly: WhetStone (in WhetStone.dll) Version: 1.0.4.0 (1.0.0.0)
SyntaxC#
public static T SingleOrDefault<T>( this IEnumerable<T> this, T default )
Parameters
- this
- Type: System.Collections.GenericIEnumerableT
The IEnumerableT to use. - default
- Type: T
The value to return if this is empty.
Type Parameters
- T
- The type of the IEnumerableT
Return Value
Type: TThe single element of this, or default if none exist.
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).Exceptions| Exception | Condition |
|---|---|
| InvalidOperationException | If the argument contains more than one element. |
See Also