Difference between revisions of "CamHac/PostHackathonReport"

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(GHC and base library improvements)
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* [http://hackage.haskell.org/trac/ghc/ticket/5414 Add unchecked left and right bit shifts]: The Data.Bits.shift method uses a branch to check if the shift amount is larger than the word size and returns 0 in these cases. This extra safety makes performance worse in bit twiddling code.
 
* [http://hackage.haskell.org/trac/ghc/ticket/5414 Add unchecked left and right bit shifts]: The Data.Bits.shift method uses a branch to check if the shift amount is larger than the word size and returns 0 in these cases. This extra safety makes performance worse in bit twiddling code.
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* Discussed unpacking of enums in GHC (not yet implemented).

Revision as of 11:21, 14 August 2011

Post-Hackathon Report

This page is for listing what was done during the Hackathon. Please add a short description of what you worked on, with links to relevant blog posts, hackage packages, commits, etc.

fclabels 1.0 release

New release of the fclabels package. The new package has a lot of code and documentation cleanups, support for partial labels in the case of multi-constructor datatypes and is about 20x as fast for setting and modifying as the previous version. Thanks everyone for helping me out!

Hackage: http://hackage.haskell.org/package/fclabels-1.0.1

Github: http://github.com/sebastiaanvisser/fclabels

GHC and base library improvements

  • Add unchecked left and right bit shifts: The Data.Bits.shift method uses a branch to check if the shift amount is larger than the word size and returns 0 in these cases. This extra safety makes performance worse in bit twiddling code.
  • Discussed unpacking of enums in GHC (not yet implemented).