F# has query expressions that help to easily build Language Integrated Query (LINQ) queries. Query expressions can be declared as query { ... }. It is a type of computation expression, just like the sequence expression. An example code is given as follows:
let data = [| 1..10 |]
let simpleExpression() =
query {
for d in data do
select d
contains 5
}
> simpleExpression();;
val it : bool = true
Query expressions have a list of query operators with which we can use the LINQ-like operations on the data:
let designations = [| "CEO"; "CTO"; "Manager"; "Employee" |]
type Employee =
{
FirstName: string
LastName: string
Designation: string
Salary: int
} with
static member DummyData() =
let r = new System.Random()
seq {
for i = 0 to 10 do
let e = {
...