Haskell Weekly News: February 13, 2006
Greetings, and thanks for reading issue 24 of HWN, a
weekly newsletter covering developments in the Haskell community. Each
Monday, new editions are posted to
the Haskell mailing list
The Haskell Sequence.
- FFI Imports Packaging Utility. Dimitry Golubovsky
announced the pre-release of the FFI Imports Packaging Utility
(ffipkg), a new member of the HSFFIG package.
The `ffipkg' utility prepares a Haskell package containing FFI imports
for building by accepting locations of C header and foreign library
files as command line arguments and producing Haskell source files
with FFI declarations, a Makefile, a Cabal package descriptor file,
and a Setup.hs file suitable for running the Cabal package setup
program. The utility acts as a "driver" running the C preprocessor,
the equivalent of the hsffig program, and the source splitter.
darcs get --partial http://hsffig.sourceforge.net/repos/hsffig-1.1
- Haskell in Higher Education.
John Hughes announced that the result of his survey into the use of
Haskell in higher education are out. The survey covers 89
universities, accounting for 5-10,000 students being taught
Haskell this academic year. The results are
available on the web.
This section covers activity on Haskell' this week.
- Generic catch in a MonadIO. Oleg Kiselyov
forked an interesting discussion, with code, on formulating
a generic catch function.
- RFC: Streams. Bulat Ziganshin posted a request for feedback on the interface of a
new Streams library CharEncoding transformers.
- RFC: Time Library 0.3. Ashley Yakely announced
the third draft of a replacement for the standard time library.
- Eliminating Multiple-Array Bound Checking through
Non-dependent types. Oleg also
writes on writing code with non-trivial static guarantees in the
present-day Haskell (i.e., Haskell98 + rank-2 types). He describes how
to eliminate array bounds checking when processing several arrays at a
time. The number of arrays to process is not statically known.
Furthermore, the arrays may have different sizes and bounds --
potentially, empty and non-overlapping to. Excellent stuff.
- Haskell #1 in Great Language Shootout. As of Friday
Haskell is ranked overall 1st on the Great Language Shootout, and 2nd fastest. Thanks to the following
people (in alphabetical order) who've contributed code and ideas (and
apologies if I've missed any one!): Aaron, Alson, Bertram, Bjorn,
Branimir, Brian, Bryn, Cale, Chris, David, Don, Einar, Greg, Iavor,
Jan-Willem, Jean-Philippe, Jeff, Joel, Johannes, Josh, Ketil, Kimberly,
Lemmih, Matthias, Mirko, Sebastian, Simon and Udo.
Command line completion.
Mon Feb 6 04:26:54 PST 2006 Simon Marlow
* Basic completion in GHCi
This patch adds completion support to GHCi when readline is being
used. Completion of identifiers (in scope only, but including
qualified identifiers) in expressions is provided. Also, completion
of commands (:cmd), and special completion for certain commands
(eg. module names for the :module command) are also provided.
Contributing to HWN
You can help us create new editions of this newsletter. Please
see the contributing
information, send stories to
cse.unsw.edu.au. The darcs repository is available at
darcs get http://www.cse.unsw.edu.au/~dons/code/hwn