[Haskell] Haskell Weekly News: January 02, 2007
Donald Bruce Stewart
dons at cse.unsw.edu.au
Mon Jan 1 22:22:23 EST 2007
Haskell Weekly News
Issue 55 - January 02, 2007
Welcome to issue 55 of HWN, a weekly newsletter covering developments
in the Haskell community.
This week brings a new release of vty and HsColour, and some
interesting discussion over the holiday break.
hscolour-1.6. Malcolm Wallace announced HsColour, a popular
syntax-highlighter for Haskell code. It can generate ANSI terminal
colour codes, HTML, and CSS, and can insert hyperlink anchors for
function definitions (useful in conjunction with Haddock).
HsColour-1.6 is now available. The major addition is a new LaTeX
Dimensional: Statically checked physical dimensions. Björn Buckwalter
announced version 0.1 of Dimensional, a module for statically
checked physical dimensions. The module facilitates calculations with
physical quantities while statically preventing e.g. addition of
quantities with differing physical dimensions.
vty 2.0. Stefan O'Rear announced a new major version of vty.
Differences from 1.0 include: vty now uses a record type for
attributes, instead of bitfields in an Int; vty now supports setting
background colors; you can now explicitly specify 'default' colors;
vty now supports Unicode characters on output, automatically setting
and resetting UTF-8 mode.
'Lambda Revolution' tshirts. Paul Johnson announced the creation of
a new Haskell tshirt, on the theme of 'The Lambda Revolution'. Tshirts
are available from CafePress, and the designs are freely available.
Beautiful concurrency. Simon Peyton-Jones mentioned that he's been
writing a chapter on concurrency and transactional memory for a new
book, 'Beautiful code'. A first draft is available and Simon
welcomes constructive suggestions for improvement. The book is aimed
at a general audience of programmers, not Haskell geeks, so tries to
explain everything necessary. If you are not a Haskell expert, your
input would be particularly valuable.
Limits to implicit parallelism in functional applications. John
DeTreville announced a short paper about how much implicit
parallelism there might be in ordinary functional applications.
Inlining higher order functions. Norman Ramsey asked about fine
grained control for inlining in higher order functions.
Red-black trees as a nested datatype. Jim Apple described how to
implement red-black trees as a nested datatype.
SYB for XML: deserialization and collections. Alexander Jacobson
asked about approaches to simplifying boilerplate in HAppS
associated with XML serialization and state deserialization.
Flattening a lisp-style tree. pphetra asked about flattening
heterogeneous lists (or trees) in Haskell.
Functional programming at Jane Street Capital. Yaron Minsky
announced that Jane Street Capital is again looking to hire
some top-notch functional programmers. Of particular note is that Jane
Street Europe Ltd. now has an office in London, and we are
particularly interested in hiring someone for that office with strong
systems administration skills in addition to experience with
functional programming languages. The ideal candidate has: a
commitment to the practical, experience with functional programming
languages (such as Haskell). Applicants should also have experience
with UNIX and a deep understanding of computers and technology and a
strong mathematical background.
Haskell news from the blogosphere.
* Secret Santas in Haskell III: Lather, Rinse, Repeat 1
* More Haskell in Java 7 or 8?
* Generalized vs. dynamic interfaces
* Type classes in Java
* Static vs dynamic typing: do what thou wilt
* Hoogle 4 progress
* Hoogle Progress, HsMan features
* The York Haskell Compiler: 1000 patches!
* Evaluating cellular automata is co-monadic
* Tying Knots Generically
* Rails -> Ruby -> Haskell
* A Sermon on Programming Languages
* Thoughtful revision control
* Code unraveller
* The Haskell Meta Tutorial
* My Haskell Experience
* Darcs: The source code management system of the future?
* On strong type systems
* On Programming Languages and Productivity
Quotes of the Week
* chessguy: [in regards to #haskell] man, it's amazing the
difference between what happens when someone asks for help here,
and what happens when they ask for help in another language
* cjeris: It's amazing what some languages do to make thinking
impossible, seemingly justified by the assumption that no one
thinks anyway, so it's more important to make non-thinking
programming as easy as possible.
* edwinb: I've just walked past a poster advertising a gig by a band
called 'The Awkward Squad'. I assume this means they provide
output, play concurrently, and people take exception to them.
* kfish: Apparently @pl also doubles as the command for producing an
* Binkley: [Monads as clothes] using unsafePerformIO is kind of like
going naked in public, might be safe in some contexts, but you
really don't want to know what happens if you do it in a really
* quazimodo: I know why you guys are so ready to deal with me and
put up with noob questions ... you program so fast compared to
other language users that you have time to mess around?
* iulus: IO, IO, it's off to bind we go ...
* dons: all your imperative are belong to us
* Logan Capaldo: I like constructing things with type errors. It
lets me read the error and try and figure out what I'm really
trying to do
* glguy: In true Haskell form, after I realized what I was actually
doing... all my functions melted down to about 2 lines each
* jcreigh: I've found learning Haskell makes me feel vastly inferior
to Haskell coders. ('Oh,', they say, 'That's just a fold over the
hyper-monad fluxbox list. Here's the one-line replacement for your
* Saizan: [New Year's Fun] Yesterday I was so drunk I was trying to
typecheck the people at the party... 'What's your monad!?'
Wed Dec 27 17:03:48 PST 2006. Manuel M T Chakravarty. Parse and
desugar equational constraints. With -findexed-types, equational
constraints can appear in contexts wherever class predicates are
allowed. The two argument types need to be boxed and rank 0.
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