[Haskell-cafe] Off The Beaten Track: Call for Participation

2011-12-13 Thread David Walker
Off The Beaten Track: Underrepresented Problems for Programming Language Researchers http://www.cs.princeton.edu/~dpw/obt/ A Workshop Co-located with POPL 2012 Philadelphia, USA January 28, 2012 Come and join us for OBT -- we have a great program filled with a diverse set of problems and idea

[Haskell-cafe] Haskell hackers send an idea to the "off the beaten track" workshop at POPL

2011-11-02 Thread David Walker
t here: http://www.cs.princeton.edu/~dpw/obt/ We are eager to have lots of 5-minute talks as well as longer talks interleaved with discussion. Don't be shy: submit your off-the-beaten-track problems and ideas. The deadline is Nov 14. See the web site or below for more info Thanks,

Re: [Haskell-cafe] extensible data types in Haskell?

2008-07-08 Thread David Walker
thanks for everyone's help -- it seems the simplest solution is to use the Typeable class, existential types and type-safe cast. Cheers, Dave On Sun, Jul 6, 2008 at 9:18 PM, Don Stewart <[EMAIL PROTECTED]> wrote: > princedpw: >> Hi all, >> >> SML conveniently contains the type "exn" which is an i

[Haskell-cafe] extensible data types in Haskell?

2008-07-06 Thread David Walker
Hi all, SML conveniently contains the type "exn" which is an instance of an "extensible data type". In other words, unlike normal data types that are "closed" (can't admit new constructors once defined), SML's exn type is "open," allowing programmers to keep adding new alternatives as often as th

re: [Haskell-cafe] Implementing PADS in Haskell?

2008-06-30 Thread David Walker
Simon writes: > It's not clear to me > > a) whether or not you want new syntax (requires writing a parser) we are starting out our implementation without special syntactic support, but I do anticipate it will be useful primarily because the implementation I envision will need to generate both

[Haskell-cafe] Implementing PADS in Haskell?

2008-06-30 Thread David Walker
hi, I sent the message below to the template Haskell mailing list and it was suggested that I send it to the more general Haskell mailing list. After my question, I attached a few responses I have received. Thanks in advance for any suggestions. Dave I am new to Haskel

[Haskell-cafe] implementing PADS in Haskell?

2008-06-30 Thread David Walker
hi, I sent the message below to the template Haskell mailing list and it was suggested that I send it to the more general Haskell mailing list. After my question, I attached a few responses I have received. Thanks in advance for any suggestions. Dave I am new to Haskel