Difference between revisions of "CamHac/PostHackathonReport"
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+ | * use red text to report when <font color="red">we have a conflict</font> ([http://bugs.darcs.net/issue1681 issue1681],[http://bugs.darcs.net/patch646], Jeff Foster) |
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+ | * support 'since' in English dates parser |
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+ | * filter SSH output ([http://bugs.darcs.net/issue845 issue845], Jeff Foster and Sebastien K) |
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+ | * support arbitrary darcs command in darcs-test (Alexander N) |
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+ | * output ISO dates in darcs changes? ([http://bugs.darcs.net/issue140 issue140], Alexander N, may be not a good idea) |
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+ | * |
Revision as of 12:40, 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 primops for bit population count. These primops compile down to `POPCNT` instructions where available and fast fallbacks (implemented in C) otherwise.
- 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).
Darcs
New contributors:
- use red text to report when we have a conflict (issue1681,[1], Jeff Foster)
- support 'since' in English dates parser
- filter SSH output (issue845, Jeff Foster and Sebastien K)
- support arbitrary darcs command in darcs-test (Alexander N)
- output ISO dates in darcs changes? (issue140, Alexander N, may be not a good idea)