Aggregation
Aggregate, Average, Count, LongCount, Max, Min, Sum
Conversion
AsEnumerable, Cast, OfType, ToArray, ToDictionary, ToList, ToLookup
Element
ElementAt, ElementAtOrDefault, First, FirstOrDefault, Last, LastOrDefault, Single, SingleOrDefault
ElementAt
ElementAtOrDefault
First (simple)
First (conditional)
FirstOrDefault
Last
LastOrDefault (simple)
LastOrDefault (conditional)
Single
SingleOrDefault
Generation
DefaultIfEmpty, Empty, Range, Repeat
Grouping
GroupBy
Join
GroupJoin, Join
Ordering
OrderBy, OrderByDescending, Reverse, ThenBy, ThenByDescending
OrderBy (simple - numbers)
OrderBy (simple - dates)
OrderBy (simple - objects)
OrderByDescending
Reverse
ThenBy
ThenByDescending
Other
Concat, SequenceEqual, Zip
Partitioning
Skip, SkipWhile, Take, TakeWhile
Projection
Select, SelectMany
Quantifiers
All, Any, Contains
Restriction
Where
Set
Distinct, Except, Intersect, Union
Close
Last: Retrieves last element from a collection. Throws exception if collection is empty.
Last: Retrieves last element from a collection. Throws exception if collection is empty. |
Last: Retrieves last element from a collection. Throws exception if collection is empty. |
This Lambda Expression sample retrieves last element from array. |
This Lambda Expression sample retrieves last element from array. |
// A Query Expression cannot be constructed for Last() in C#. // Consider using a Lambda Expression instead.
' A Query Expression cannot be constructed for Last() in VB.NET. ' Consider using a Lambda Expression instead.
let Sample_Last_Linq() = let numbers = [|7; 3; 5|] let result = query { for n in numbers do last } Debug.WriteLine(sprintf "Last number in array is:") Debug.WriteLine(sprintf "%d" result)Output:
Last number in array is: 5
static void Sample_Last_Lambda() { int[] numbers = { 7, 3, 5 }; var result = numbers.Last(); Debug.WriteLine("Last number in array is:"); Debug.WriteLine(result); }Output:
Last number in array is: 5
Private Shared Sub Sample_Last_Lambda() Dim numbers As Integer() = {7, 3, 5} Dim result = numbers.Last() Debug.WriteLine("Last number in array is:") Debug.WriteLine(result) End SubOutput:
Last number in array is: 5
let Sample_Last_Lambda() = let numbers = [|7; 3; 5|] let result = numbers.Last() Debug.WriteLine(sprintf "Last number in array is:") Debug.WriteLine(sprintf "%d" result)Output:
Last number in array is: 5