Greetings,
I am very pleased to officially announce HacPhi 2011, a Haskell
hackathon/get-together to be held July 29-31 at the University of
Pennsylvania in Philadelphia supported by contributions from Amgen,
Jane Street, and Microsoft Research. The hackathon will officially
kick off at
Two values of LocalTime may well be computed with respect to different
timezones, which makes the operation you ask for dangerous. First
convert to UTCTime (with localTimeToUTC), then compare.
Cheers,
~d
Quoting bri...@aracnet.com:
which is a variation of the question, why can't I compare
I believe I was claiming that, in the absence of undefined, Nothing
and Nothing2 *aren't* isomorphic (in the CT sense).
But this is straying dangerously far from Ashley's point, which I
think is a perfectly good one: Hask without bottom is friendlier than
Hask with bottom.
~d
Quoting Edw
Quoting Ashley Yakeley :
data Nothing
I avoid explicit "undefined" in my programs, and also hopefully
non-termination. Then the bottomless interpretation becomes useful,
for instance, to consider Nothing as an initial object of Hask
particularly when using GADTs.
Forgive me if this is
Quoting John Lato :
Packages on Hackage are *source distributions*, so users need a
development environment in order to make use of them. Windows doesn't
have a built-in development environment, therefore I don't see any
reason why developers shouldn't choose the one most convenient to
them.
Quoting Stephen Tetley :
This is actually due to a missing header file included *by*
system_encoding.h rather than Cabal not finding system_encoding.h. It
took to me a while to spot that one! [note to self - always check for
this in future].
The missing header is - where it originates I don't
I'm trying to help a non-Haskell person build wyvern (shameless plug
in case you like go: http://dmwit.com/wyvern), but (s)he's having
trouble building the "encoding" library. Has any Windows person done
it successfully or is willing to try it?
I tried contacting the "encoding" maintainer a
Quoting Jake Wheat :
On 14 February 2010 16:02, Henk-Jan van Tuyl wrote:
Finally, it is the array subscript operator:
let x = arr ! 10
Shouldn't this be
let x = arr !! 10
(!) is for arrays, (!!) is for lists.
~d
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Ha
I've just done the first release of wyvern [1], a small program to
play moves for you on the Dragon Go Server [2], along with point
releases for two supporting libraries.
On DGS, people play many games of go simultaneously, making only one
move per day in each game (about). A commonly reque
