Here is the latest Caml Weekly News, for the week of February 05 to 12, 2008.
Archive: http://groups.google.com/group/fa.caml/browse_frm/thread/8be83ea9d8614b58#1d2154145083fdb7Concluding this thread, Keisuke Nakano said:
The shortest code contest 'Palindromic Quine' is over. The result is found at: http://golf.shinh.org/p.rb?Palindromic+Quine#OCaml Finally I could find the shortest code with 199 bytes: "k\"",let rec(!)n?(q=String.make 1(Char.chr 34))s k=print_char(q^s^q^q^k^q).[abs n];!(n-1)s k in!99"99!ni k s)1-n(!;]n sba[.)q^k^q^q^s^q(rahc_tnirp=k s))43 rhc.rahC(1 ekam.gnirtS=q(?n)!(cer tel,""\k" It is an acceptable solution for the contest though the code execution ends with an exception 'index out of bounds'. There may exist a palindromic Quine code shorter than this code. Please try to find it if you're interested in.
Archive: http://groups.google.com/group/fa.caml/browse_frm/thread/6970ff8a7ead01d6#8e0b0aba3a425ba4Julien Signoles announced:
I am happy to announce a new release (v2.0) of Calendar, an ocaml library managing dates and times. This release provides a bunch of new modules and functions. The library is available at: http://www.lri.fr/~signoles/prog.en.html#calendar The changes between the last version (v1.10) and this new one are: * licence changes from LGPLv2 to LGPLv2.1 * use -pack: all modules of the library are packed inside a single module CalendarLib (calendar now requires ocaml >= 3.09.1) * new modules Time_sig, Date_sig and Calendar_sig * new module Ftime (time implementation in which seconds are floats) (Hezekiah M. Carty's suggestion) * new module Calendar_builder (generic calendar implementation) * new module Fcalendar (calendar implementation using Ftime) * new module Calendar.Precise (calendar with a best precision) * hash functions are provided * new modules Printer.Ftime and Printer.Fcalendar * modules Printer.Date, Printer.Time and Printer.Calendar respectively replace Printer.DatePrinter, Printer.TimePrinter and Printer.CalendarPrinter. These last modules still exist but are deprecated. * new function Time_Zone.on * new function Date.from_day_of_year (Hezekiah M. Carty's suggestion) * new function Date.is_valid_date (Richard Jones' suggestion) * new module Utils * new module Version (information about version of calendar) * add tags @example, @raise and @see in the API documentation
Archive: http://groups.google.com/group/fa.caml/browse_frm/thread/1d8613c800ec034a#dc1eecdd26bf3157Deep in this thread, Jean-Christophe Filliâtre said:
Just for fun, I wrote a ropes-based implementation of Buffer. The interface is exactly the same. Differences between the two implementations are the following: - Contrary to ocaml's standard library, a buffer size is not limited to [Sys.max_string_length], but to [max_int] (sizes are represented internally using native ocaml integers). - [contents] and [sub] raise [Invalid_argument] if the resulting string would be larger than [Sys.max_string_length] bytes. - The meaning of [create]'s argument is not exactly the same, though its value only affects performances, as for [Buffer]; see below. - An additional function [print] is provided. The code is here: http://www.lri.fr/~filliatr/ftp/ocaml/ds/rbuffer.mli http://www.lri.fr/~filliatr/ftp/ocaml/ds/rbuffer.ml For general-purpose ropes, see http://www.lri.fr/~filliatr/software.en.html
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