10:33 <madroach> Hello, what is wrong in the following piece of code ? My compiler says the double semicolons are wrong (syntax error):

10:34 <madroach> let x = ref 50 in let rec mainloop () = while true do () done;;

10:53 <madroach> Hello ?

10:54 <teratorn> hmm i dunno

10:55 <madroach> Did you read my question ?

10:55 <teratorn> yep

10:55 <madroach> No idea ?

10:58 <teratorn> nope..

10:58 <madroach> hmm

10:59 <teratorn> i'm not an authority on ocaml syntax though

11:00 <madroach> I'm not too, but it does not look too complicated and I don't see any mistake.

11:09 <mellum> madroach: the "in" corresponding to the second "let" is missing

11:13 <madroach> mellum: So how do you think should it look like ?

11:14 <mellum> madroach: I can't tell, since I don't know what you want to do

11:16 <madroach> I want to use some values local to an infinite loop which can be called by mainloop ().

11:17 <mellum> let rec mainloop () = let x = ref 50 in while true do () done then, maybe

11:19 <madroach> OK, but the values should be accessible to another function, too. So my code really looks this way:

11:19 <mellum> so it shoule be both global and local? I think you have a problem there

11:19 <madroach> let x = ref 50 in let mainloop () = while true do () done and main ();;

11:22 <mellum> Maybe what you want is let x = ref 50 let rec mainloop () = while true do () done

11:24 <madroach> Ok, now I replaces the ;; in the old example with and and it works. But why did the let x = ref 50 in let main

11:24 <madroach> ups

11:24 <madroach> ... let main () = while true do () done;;

11:24 <mellum> You never need "and" except in mutually recursive definitions.

11:24 <madroach> not work?

11:25 <mellum> madroach: because the "in" corresponding to the second "let" is missing

11:25 <madroach> mellum: What does that mean ?

11:25 <mellum> lets without in may only occur at top level

11:25 <mellum> because otherwise, they make no sense.

11:26 <madroach> So local variables may only be declared inside the let of the function ?

11:27 <madroach> Or global lets occure only at toplevel ?

11:27 <mellum> both.

11:29 <madroach> So if I have to functions using the same local variables they must both occure in the same toplevel let ?

11:29 <madroach> two not to.

11:30 <mellum> yes.

11:31 <madroach> mellum: That solved my problem, thanks !

11:31 <mellum> maybe you should just try do do without "ref", makes things easier

11:32 <madroach> mellum: Why that ?

11:33 <mellum> because to understand a function, you then only have to look at the function, and not at the places where refs it uses are also used

11:34 <two-face> hi

11:34 <mellum> hi two-face

11:34 <two-face> hello mellum

11:35 <madroach> That's right. But I don't think that's the case in my special case. But thanks anyway.

11:45 <Maddas> heh

14:02 <Maddas> Hi SmerdyLaptop

14:03 <Smerdyakov> Hello

17:58 <z> bonsoir

18:00 <Maddas> hi

18:03 <z> it is possible to read memory of a program if i'm a subfunction ?

18:03 <ayrnieu> I don't understand your question, sorry.

18:03 <z> i must wrote a function wich will be integrated in a program

18:04 <z> can i read & wrote "global" variable ?

18:04 <z> and search what variable exist ?

18:06 <ayrnieu> You can modify ref's defined within the scope of your function, yes. I don't know about 'search what variable exist' -- I think you'd do better with a structure to hold named data rather than querying the scope for variable names, even if you could do the latter in O'Caml.

20:50 <_JusSx_> l

20:51 <ayrnieu> please don't do that.

20:52 <_JusSx_> sorry :( i made a mistake

21:02 <Smerdyakov> You did WHAT!!