[Haskell-cafe] Re: Sillyness in the standard libs.
Brandon S. Allbery KF8NH
allbery at ece.cmu.edu
Thu Nov 29 13:11:14 EST 2007
On Nov 29, 2007, at 12:12 , Arthur van Leeuwen wrote:
> Going through Rational is the right solution, though. My hackish
> detour was to use fromIntegral . toInteger . fromEnum
?? fromEnum produces an Int, which is an Integral such as
fromIntegral requires; why is toInteger needed?
> Yes, that would be good! Note that both the docs for DiffTime and
> EpochTime state that
> they contain seconds, and both are somewhat unclear as to whether
> they contain any
> higher precision than whole seconds.
(a) Whether EpochTime contains higher precision than seconds is
(b) Use of a non-Integral type for EpochTime does not necessarily
mean it has higher resolution than seconds.
(Blame POSIX for both of these. Haskell's System.POSIX must deal, as
must any other POSIX-compliant library.)
brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allbery at kf8nh.com
system administrator [openafs,heimdal,too many hats] allbery at ece.cmu.edu
electrical and computer engineering, carnegie mellon university KF8NH
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