MoreEnumerableAssertCountTSource(IEnumerableTSource, Int32, FuncInt32, Int32, Exception) Method
Asserts that a source sequence contains a given count of elements.
A parameter specifies the exception to be thrown.
Namespace: MoreLinqAssembly: MoreLinq (in MoreLinq.dll) Version: 3.4.0+b99a6a8cc504caf2d48372fe54a2f8116c59cd0c
public static IEnumerable<TSource> AssertCount<TSource>(
this IEnumerable<TSource> source,
int count,
Func<int, int, Exception> errorSelector
)
<ExtensionAttribute>
Public Shared Function AssertCount(Of TSource) (
source As IEnumerable(Of TSource),
count As Integer,
errorSelector As Func(Of Integer, Integer, Exception)
) As IEnumerable(Of TSource)
public:
[ExtensionAttribute]
generic<typename TSource>
static IEnumerable<TSource>^ AssertCount(
IEnumerable<TSource>^ source,
int count,
Func<int, int, Exception^>^ errorSelector
)
[<ExtensionAttribute>]
static member AssertCount :
source : IEnumerable<'TSource> *
count : int *
errorSelector : Func<int, int, Exception> -> IEnumerable<'TSource>
- source IEnumerableTSource
- Source sequence.
- count Int32
- Count to assert.
- errorSelector FuncInt32, Int32, Exception
-
Function that receives a comparison (a negative integer if actual
count is less than count and a positive integer
if actual count is greater than count) and
count as arguments and which returns the
Exception object to throw.
- TSource
- Type of elements in source sequence.
IEnumerableTSource
Returns the original sequence as long it is contains the
number of elements specified by
count.
Otherwise it throws the
Exception object
returned by calling
errorSelector.
In Visual Basic and C#, you can call this method as an instance method on any object of type
IEnumerableTSource. 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).
This operator uses deferred execution and streams its results.