06:13 <d_bot> <darrenldl> anyone has advice for fuzzing very slow tests (in the order of 10s of seconds)?

08:05 <d_bot> <undu> First advocw would be yo try to avoid Duch slow tests. What Is It that takes so long to run?

08:15 <d_bot> <darrenldl> it's fuzzing a optimised implementation vs a simple implementation - it's not quite possible for the simple implementation to match the performance without becoming quite complicated in the process

08:55 <d_bot> <darrenldl> i can break the test space down into much smaller pieces and do the iteration that way actually, that would work around the issue i think

09:00 <zozozo> darrenldl: another way way would be to check the result of the optimised version, rather than compare it to a "simple/naive" version, assuming the result of the implementation can be checked reasonably

19:56 <lefuturiste> Hi!

19:58 <lefuturiste> Can someone help me with a recursive function that I wrote to code FizzBuzz? The thing is, I can't manage to append a string using the ^ operator. https://pastebin.com/raw/7nwSn70k

20:02 <schlaftier> lefuturiste: You seem to have omitted an argument in the call to "loop" in the second-to-last line

20:02 <lefuturiste> Ah yes thanks

20:03 <lefuturiste> Now I'm trying to reduce occurences of calls to the "loop" internal function

20:05 <schlaftier> It looks like infinite recursion to me

20:06 <schlaftier> Also you might want to reconsider the order of your if-clauses

20:07 <lefuturiste> it might not be optimised but it did work though. I'm completly new to OCaml

20:09 <lefuturiste> but I have an issue when I want to call the function I made 27 | Printf.printf ("" ^ (fizzBuzz 15));;

20:09 <lefuturiste> ^^^^^^^^^^^^^^^^^^^^

20:09 <lefuturiste> Error: This expression has type string but an expression was expected of type

20:09 <lefuturiste> ('a, out_channel, unit, unit, unit, unit)

20:09 <lefuturiste> ('a, out_channel, unit) format =

20:09 <lefuturiste> CamlinternalFormatBasics.format6

20:09 <lefuturiste> oops wrong alignment

20:10 <lefuturiste> I'm not very used to IRC, I'm a discord user :)

20:10 <lefuturiste> So I don't understand why I have this error, because I pass a string to Printf.printf it should be able to handle it right?

20:11 <octachron> Note that this channel is bridged to the OCaml's discord server

20:11 <octachron> Format strings are not strings in OCaml, they share the syntax due to a compiler trick but there are fundamentally different.

20:12 <octachron> You can use "Printf.printf "%s" (fizzbuzz 15)"

20:12 <lefuturiste> or print_endline I guess

20:12 <lefuturiste> thx

20:16 <lefuturiste> And yes there was a big mistake in the if clause order schalftier

20:19 <lefuturiste> I'm learning OCaml because it's used in computer science courses at my High School (I'm in France in a Classe préparatoire)

20:23 <mrvn> lefuturiste: Some more details: Printf.printf has type "('a, out_channel, unit) format -> 'a" where the 'a becomes something like (int -> string -> unit) for "%d: %s" for example. Constructing that type is a magic hack in the compiler as octachron said and only works on string literals.

20:23 <schlaftier> lefuturiste: I hear that's quite common in France. Hope you're enjoying your courses!

20:24 <octachron> It is not so much the type that is a hack nowadays but the shared syntax with string

20:25 <octachron> You could write "%d" by hand as CamlinternalFormatBasics.(Format (Int (Int_d, No_padding, No_precision, End_of_format), "%d"))

20:25 <octachron> It is a *little* less user-friendly

20:26 <lefuturiste> thx I will try to do my best, from a imperative background standpoint it's a very weird approach to programming this functional style, but I enjoy it. different approachs are always interesting :)

20:26 <mrvn> Sure. you can build a format manually. YOu just can't use a string.

20:26 <schlaftier> good night everyone

20:29 <lefuturiste> where I can found the link of the discord server?

20:30 <d_bot> <lefuturiste> ok I found it