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
Select: Selects, projects and transforms elements in a collection.
| Select: Selects, projects and transforms elements in a collection. |
| Select: Selects, projects and transforms elements in a collection. |
| This Lambda Expression sample selects and rounds down each number in array. |
| This Lambda Expression sample selects and rounds down each number in array. |
static void Sample_Select_Linq_Simple()
{
decimal[] numbers = { 3.4M, 8.33M, 5.225M };
var result = (from n in numbers
select Math.Floor(n));
Debug.WriteLine("Numbers rounded down:");
foreach (int number in result)
Debug.WriteLine(number);
}
Output: Numbers rounded down: 3 8 5
let Sample_Select_Linq_Simple() =
let numbers = [|3.4M; 8.33M; 5.225M|]
let result = query {
for n in numbers do
select (floor(n))
}
Debug.WriteLine(sprintf "Numbers rounded down:")
for number in result do
Debug.WriteLine(sprintf "%f" number)
Output: Numbers rounded down: 3.000000 8.000000 5.000000
Private Shared Sub Sample_Select_Linq_Simple()
Dim numbers As Decimal() = {3.4D, 8.33D, 5.225D}
Dim result = From n In numbers Select Math.Floor(n)
Debug.WriteLine("Numbers rounded down:")
For Each number As Integer In result
Debug.WriteLine(number)
Next
End Sub
Output: Numbers rounded down: 3 8 5
let Sample_Select_Lambda_Simple() =
let numbers = [|3.4M; 8.33M; 5.225M|]
let result = numbers.Select(fun n -> floor n)
Debug.WriteLine(sprintf "Numbers rounded down:")
for number in result do
Debug.WriteLine(sprintf "%f" number)
Output: Numbers rounded down: 3.000000 8.000000 5.000000
Private Shared Sub Sample_Select_Lambda_Simple()
Dim numbers As Decimal() = {3.4D, 8.33D, 5.225D}
Dim result = numbers.Select(Function(n) Math.Floor(n))
Debug.WriteLine("Numbers rounded down:")
For Each number As Integer In result
Debug.WriteLine(number)
Next
End Sub
Output: Numbers rounded down: 3 8 5
static void Sample_Select_Lambda_Simple()
{
decimal[] numbers = { 3.4M, 8.33M, 5.225M };
var result = numbers.Select(n => Math.Floor(n));
Debug.WriteLine("Numbers rounded down:");
foreach (int number in result)
Debug.WriteLine(number);
}
Output: Numbers rounded down: 3 8 5