Roughly speaking that what a set is in F#, obviously there are no repeated items, but not sure if this is important if you're list is sorted. Haven't profiled it so don't know what fast it is, but it is immutable and based on a binary tree.
Cheers,
Rob
Thanks. That's interessting - but I have to specify a sort order function.
I think I will give it a try and later post my solution.
Best regards,
Steffen
Hi,
There's a Set.Make function in the PowerPack. It's marked for OCaml Compatibility, but I don't know what's the F# way. Example of use:
1 2 3 4 5 6 7
// Set.Make returns a set of functions
let AbsSet = Set.Make(fun x y -> compare (abs x) (abs y))
let set_of_list l =
List.fold_left (fun s e -> AbsSet.add e s) AbsSet.empty l
set_of_list [-2; 5; 2; 4]A set has no repeated values. Thus, this set contains 3 elements (-2, 5 and 4).
Laurent
Thanks. This is perfect.
Steffen
Thanks for the help.
I put all the information together and blogged two small articles about it.
See "A immutable sorted list in F# - part I" and part II if
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Hi,
is there any native way to get a (fast) immutable sorted list or do I have to implement it with a binary tree?
Best regards,
forki