F# generate a sequence/array of dates

Question

In F# I can easily do

let a = [1 .. 10];;

Then why can\'t I do

let a = DateTime.Parse(\"01/01/2012\")
let b = DateTime.Parse(\"         


        

Answer 1

Here's a funky way of generating a list of dates. Note I'm taking no credit for this whatsoever as I got it from someone else.

open System
let a = new DateTime(2013,12,1)
let b = new DateTime(2013,12,5)
Seq.unfold (fun d -> if d < b then Some(d, d.AddDays(1.0)) else None) a
 |> Seq.toList;;

It returns:

val it : DateTime list = [01/12/2013 00:00:00; 02/12/2013 00:00:00; 03/12/2013 00:00:00; 04/12/2013 00:00:00]