Question

I constantly call static methods calling the static class, and this seems unnatural to me:

let l = Seq.length myseq

It would be more natural to me to use

let l =  myseq.length

you can imagine it is the same for many base class

Is there a way to have all those methods available automatically as instance method, without writing extension methods for each of them ?

Answer 1

In general, there is no way to treat values from modules as if they are instance members. However, in the case of the Seq module, you can find extension member analogs of many of the Seq functions in the System.Linq namespace, so you can do:

open System.Linq

let arr = [| 1 .. 10 |]
let ct = arr.Count()
let arr2 = arr.Select(fun i -> i + 1)
// etc.