Haskell Weekly News: April 03, 2006

Submitted by dons on Sun, 04/02/2006 - 8:34pm.

Haskell Weekly News: April 03, 2006

Greetings, and thanks for reading issue 31 of HWN, a weekly newsletter covering developments in the Haskell community. Each Monday, new editions are posted to the Haskell mailing list and to The Haskell Sequence. RSS is also available. Headlines also go to haskell.org.


This section covers activity on Haskell' standardisation process.


  • Mobile Haskell. Dmitri O.Kondratiev asked about running Haskell on a PowerPC Windows Mobile device. John Meacham responded with some interesting notes regarding Haskell on the Nokia 770.

  • GHCi as a debugger. Lemmih wrote on "whether it would be possible to call GHCi from interpreted byte-code. It turned out that it was, and it was even fairly easy". Great stuff!

  • Clearer reflection. Krasimir Angelov proposed some ideas for a better Reflection API for Haskell. Currently we have Typeable and Data classes which provide some pieces of information about the data types at runtime. typeOf provides runtime information about the type of a given variable. dataTypeOf provides almost the same information but with some extras. There is some overlap between the TypeRep and DataType types. Some pieces of information you can get from the TypeRep, other from the DataType and some other from both of them. There is also an information which is inaccessible from either TypeRep and DataType.

Quotes of the Week

Seen on #haskell:

Lemmih:: calling an out-of-scope function isn't as easy as I had hoped

TuringTest:: They got it work in Haskell without understanding Haskell.
It is quite an achievement, of some description.

tennin:: [very #haskell] anyone know of any good books/papers on the
application of category theory to databases?

Smokey`:: I can't believe it, Haskell is starting to draw me away from
C++... I swore i'd never turn from C++

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