- Haskell - Haskell.org

RE: Cash Prizes Win!
by Ashley Yakeley 27 Sep '01

27 Sep '01

At 2001-09-27 03:48, Simon Marlow wrote: >I could turn on subscriber-only posting if there's a consensus to do >that. I vote for that. >It might be inconvenient in that you have to post from the same >account that you read Haskell mail from though, and I know some people >have separate email accounts just for receiving Haskell mail. I also run an email list using Mailman. Anytime a subscriber sends a message from a 'wrong' address, Mailman catches it, and I simply subscribe that address 'nomail', and approve the message. >Also, what do people think about the volume of Conference-related >announcements sent to the list (haskell(a)haskell.org in particular)? I'm not really bothered by the way it is... -- Ashley Yakeley, Seattle WA

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Haskell report (August release)
by Simon Peyton-Jones 27 Sep '01

27 Sep '01

Gentle colleages As ever, the emission of a draft of the Revised Haskell 98 Report elicited a flood of new corrections. It's quite uncanny. Anyway, I now publish another draft (the August release). http://research.microsoft.com/~simonpj/haskell98-revised Please check it out. My plan is that if I hear nothing for a month, I'll freeze it. Otherwise I'll iterate. Main changes this month: * stuff to do with lexical syntax (Ch 2) * stuff to do with modules (Ch 5) * many minor wording improvements As ever, the bugs list says exactly what has changed (grep for "Aug 2001". Happy days, Simon

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RE: GUI Library Task Force
by Simon Marlow 27 Sep '01

27 Sep '01

> I don't think this is compatible with things like adding support > for the library hierarchy with multiple dots to Haskell 98 as you > will then be able to write a program that is valid Haskell 98 by > todays definition but not yesterdays. OTOH if what you mean is > adding support incrementally to todays *tools* and declaring H98 > with a set of the new features to be Haskell 2 at some point in > the future then I don't have a problem with that. I don't think anyone is suggesting that we change the meaning of the term "Haskell 98": it is, and always will be, defined by the Haskell 98 report. The idea behind "addenda" to the report is to define a family of new languages, eg. Haskell 98 + FFI, Haskell 98 + FFI + Exceptions, and so on. These languages may be incompatible with pure Haskell 98, but compilers will generally give you the choice between pure Haskell 98 and whatever extensions are supported. Cheers, Simon

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RE: Cash Prizes Win!
by Simon Marlow 27 Sep '01

27 Sep '01

[ Ketil Malde asks about recent spam on Haskell mailing lists... ] > How about disallowing non-subscribers from posting? This list is my > main source of spam these days. (Effective filtering is your friend) My apologies for this spam that got through. Mailman's automatic filtering catches *most* of the spam bound for the list - there are usually a few messages per day. The ones that get through are very much the exception, but it does occasionally happen. I could turn on subscriber-only posting if there's a consensus to do that. It might be inconvenient in that you have to post from the same account that you read Haskell mail from though, and I know some people have separate email accounts just for receiving Haskell mail. What do people think? Also, what do people think about the volume of Conference-related announcements sent to the list (haskell(a)haskell.org in particular)? Most of these get caught by the filter, and I tend to disallow only those that have no connection to programming language research at all. This could be tightened to Haskell-related or functional programming-related conferences only. Cheers, Simon

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RE: GUI Library Task Force
by Simon Marlow 27 Sep '01

27 Sep '01

> Great. So that is something that goes into some library conventions > document. Such a document is here: http://www.haskell.org/~simonmar/libraries/libraries.html If there are comments on the design (which is by no means finalised), please take them to the libraries mailing list. Cheers, Simon

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HOpenGL mailing list (?)
by Andre W B Furtado 27 Sep '01

27 Sep '01

Is there any interest out there in creating a HOpenGL mailing list? Thanks, Andre W B Furtado

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FranTk with ghc 5.00
by Han Tuong Hau 27 Sep '01

27 Sep '01

Hi I'm trying to run the patched version of FranTk for ghc-4.06 with ghc-5.00. I used the fixes provided by Jan Kort for getting FranTk to work with ghc-4.08. This allows 'make boot' to succeed but produces errors at 'make all'. Are there any current fixes for running FranTk with ghc-5.00. Thanks Tuong

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Joy and Concatenative Programming
by S. Alexander Jacobson 26 Sep '01

26 Sep '01

I just found out about a functional programming language called Joy (see http://www.latrobe.edu.au/philosophy/phimvt/joy.html) Joy differs from Haskell in that it has no variables. Instead, all functions are postfix, taking a stack as their argument and returning a stack as a result. Joy advocates contend that the elimination of variables and environments improves on functional languages in much the same way the elimination of state improved on imperative languages. In particular, they claim the result is massively simplified semantics and implementation (all the tree-rewriting rules go away), faster development, easier optimization (search and replace lists of functions) and even simple meta-programming. Here is a quick example program to give a flavor for how it works. [1 2 3 4] [dup *] map == [1 2 3 4] [square] map is the same as Haskell's map (\x->x*x) [1,2,3,4] == map square [1,2,3,4] Recursion is handled via some built in combinator primitives. For example this is qsort: qsort == [small] [] [uncons [>] split] [[swap] dip cons concat] binrec (the explanation of how this works is at http://www.latrobe.edu.au/philosophy/phimvt/joy/j01tut.html) Currently Joy is a interpreted language without a compiler checked type-system, but there is some discussion about adding such a system. (It is also apparently non-lazy, but I'm not sure what that means in a world without variables). The system is very new and primitive, but looks promising. I am curious what the wiser and more experienced people on this list think of Joy's approach. -Alex- ___________________________________________________________________ S. Alexander Jacobson Shop.Com 1-646-638-2300 voice The Easiest Way To Shop (sm)

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More GHC 5.02 binaries available
by Julian Seward (Intl Vendor) 26 Sep '01

26 Sep '01

The web site (http://www.haskell.org/ghc) now has final binary builds for x86-Linux sparc-solaris Windows NT/2K/XP and allegedly 95/98/ME Additionally, the final source tarball is now on the web page. I claim (and earnestly hope) it is suitable for building other binary builds of 5.02. $ md5sum -b ghc-5.02-src-2.tar.bz2 0bf8b670759240032c317fec6b02f59d *ghc-5.02-src-2.tar.bz2 J

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RE: ANNOUNCE: Happy version 1.11
by Simon Marlow 26 Sep '01

26 Sep '01

> ANNOUNCING Happy 1.11 - The LALR(1) Parser Generator for Haskell > ----------------------------------------------------------------- Owing to a rather embarrassing bug related to precedence parsing in the 1.11 release, I've uploaded new versions of the packages with the bug fixed. My apologies to anyone who already downloaded/installed 1.11 - please re-install with the updated packages. Cheers, Simon

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