Functional Programming 5 (Function Composition) In Arabic in F#

program.fs

// Learn more about F# at http://docs.microsoft.com/dotnet/fsharp

open System
[<EntryPoint>]
let main argv =
        
    let addOne x = x + 1 //function that adds 1 to x
    let Square x = x * x //function that multiplies x by x 
    let SubtractTen x = x - 10 //function that subtracts 10 from x
    
    // you can think of the |> like a single parameter lambda in c# x=> x
    // so x goes to y function 
    let AddoneSquareSubtractTen x =
        x
        |>addOne 
        |>Square
        |>SubtractTen
       
    
    [3;5;7;8]
    |>List.map (fun x-> AddoneSquareSubtractTen x)//map is similar to Select in LINQ
    |>List.iter (fun x-> printfn "%i" x) //iter is similar to ForEach in LINQ
        
    0 // return an integer exit code