This is an old revision of the document!

F# workshop

Prerequisites

↘ alternatives

let hello = printf "Hello World"
hello

let hello x = printfn "Hello %s" x
hello "world"

let hello x = printfn "Hello %s" x
"World" |> hello

|> is the pipeline operator

let square x = x * x
let subtract x y = x - y

let ``complicated stuff`` x =
    printfn "%d" (add 5 (square x))

let ``another complicated stuff`` x =
    x |> square |> subtract 5 |> printfn "%d"

let equation x =
	x 
	|> (fun y -> y * y ) 
	|> (fun y z -> y - z ) 5
	|> printfn "%d"

Pros:

Cons:

Not suitable for real time (unpredictable performance)
Functional languages fundamentally don't model how your computer works ⇒ harder to optimize.
Different thinking process (you need to re-learn)

¹⁾

Read, Evaluate, Print Loop