I have created an immediate object in OCaml. let x = object (self) val dataMember = 3 method aMethod = print_endline "Called a method" end;; As the object doesn't have a name (is it considered anonymous?), how can it be correctly represented in UML? Thanks. ...
I am looking to create (as a proof-of-concept) an OCaml (preferably) program that converts PCL code to PDF format. I am not sure where to start. Is there a standardized algorithm for doing so? Is there any other advice available for accomplishing this task? Thanks! ...
I am in need of an absolute value function for floats in OCaml and the core language doesn't seem to possess one, so I wrote the following: let absF (f:float) = if f > 0.0 then f else (f *. -1.0);; which seems to work for positives but not for negatives, citing: This expression has type float -> float but is here used with type int ...
I am attempting to simulate an interface in OCaml and am using the "type" construct. I have two types: type fooSansBar = {a: string; b: int};; type fooConBar = {a:string; b:int; bar:char};; ...and would like to define a particular fooSansBar: let fsb = {a="a"; b=3};; ...but am told that the bar field is not defined. From this, it a...
After being disappointed by the responses to the hidden features of F# question, please allow me to rephrase it: What are the lesser known, or hidden, features of OCaml that every programmer should know about? ...
What sets the two ML dialects apart? ...
Hi everyone, [EDIT] Thank you for your answer, my problem is the following : Module A called Map.ml let lst = ref [Instance1_ModuleB; Instance2_ModuleB; ...];; let is_coliding p = DoSomeWork_And_Return_A_Bool ;; .... other things here. Module B called Player.ml Open Map class player_object (x_in, y_in, name_in)= object (self) me...
I'm only a novice programmer (I do it for fun) and I'm coming from the world of Python/C++/other procedural languages, and procedural style of problem solving. I fell in love with OCaml's simplicity after being boggled by its functional style for about a week. Since I'm not an engineer or mathematician, what are some helpful books or res...
I am trying to learn Haskell, and I really like it, but I can't wrap my head around most of it. Would Lisp, OCaml, etc. be a gentler introduction to functional programming? ...
I am trying to accomplish a mutual binding between two classes in OCaml (a la Mediator Pattern's) and am getting an error upon compilation. class virtual ['mediator] colleague mIn = object val m = mIn method virtual getmediator : 'mediator end;; class concreteColleague mIn = object inherit colleague method getmediator = m end;; (...
I am attempting to implement the Visitor Design Pattern using OCaml's OO constructs and type system and am running into problems upon instantiation of an Element. class virtual ['hrRep] employee = object method virtual receiveEvaluation : 'hrRep -> unit method virtual getName : string end;; class ['hrRep] accountant myName = object ...
I am wondering if I should continue to learn OCaml or switch to F# or Haskell. Here are the criteria I am most interested in: Longevity Which language will last longer? I don't want to learn something that might be abandoned in a couple years by users and developers. Will Inria, Microsoft, University of Glasgow continue to support...
Sometimes I still get stuck trying to translate procedural code into functional code. Is there a list of functional idioms/snippets that are mapped to procedural idioms/snippets? Edit Since there doesn't seem to be a centralized website of these snippets, I am turning this into a community wiki. Please paste any procedural -> function...
Why is it that functions in F# and Ocaml (and possibly other languages) are not by default recursive? In other words, why did the language designers decide it was a good idea to explicitly make you type rec in a declaration like: let rec foo ... = ... and not give the function recursive capability by default? Why the need for an exp...
I saw the following function call in Yacfe example: Visitor_c.vk_program { Visitor_c.default_visitor_c with Visitor_c.kexpr = (fun (k, bigf) exp -> match Ast_c.unwrap_expr exp with | Binary(e1, Logical (Eq), (((Constant(Int("0")) as _e2),_t),ii)) -> (match Ast_c.get_onlytype_expr e1 with | Some ...
after this question, I don't know what to think. In OCaml, if you do something like -1.0**2.0 (because of the typing you need to have float), you obtain 1.00. According to the standard order of operations, the result should be -1 (as in python). I wasn't able to find the reason or a clear definition of the operator precedence in OCaml....
I've been parsing poker hand histories for the past year and have learned quite a deal about parsing in general. We started with regexes but quickly realized that wouldn't scale easily. We skipped languages from ruby to c++ and finally came to grips that it was the algorithim that had to change. We picked up Boost::Spirit and watched o...
Is it possible to make a copy of Gdk.image object using lablgtk2 for Ocaml? I tried to find 'copy' or 'clone' methods but failed. ...
I'm considering the use of a combination between OCaml and C code in a new application. It seems that calling C code from Ocaml is simple: external name : type = C-function-name However, it seems also that in the other way around (calling OCaml from C) is more complicated: static void call_ocaml_void (const char * name) { ...
I am trying to get started with some basic Ocaml programming. To start I wanted to get the OpenGL example from wikipedia running. http://en.wikipedia.org/wiki/Ocaml let _ = ignore( Glut.init Sys.argv ); Glut.initDisplayMode ~double_buffer:true (); ignore (Glut.createWindow ~title:"OpenGL Demo"); let angle t = 10. *. t...