It is strange because fromInt works in the hugs prompt But when I use it
in my haskell script it doesn´t work.PreludefromInt 5 :: Float
(ok!)butaverage :: Int -
Floataverage n = fromInt ( sum n ) :: Float / fromInt n ::
Floatdoesn´t work...fromInteger works in hugs prompt
and inside the haskell script too.Stenio.
- Mensagem Original De:
"Iavor S. Diatchki" [EMAIL PROTECTED]Para:
"[EMAIL PROTECTED]" [EMAIL PROTECTED]Cópia:
[EMAIL PROTECTED], [EMAIL PROTECTED]Assunto: Re: AW: [Haskell] Hugs
Nov2003 X Nov2002Data: 16/03/04 16:52hi,i believe you should usefromIntegral :: (Integral a,
Num b) = a - bSince Int is in the Integral class, and Float
is in the Num classthis should do exactly the job you need.For
the other functions that were not working --- they were moved tothe Char
module, so you need to add "import Char" at the top of
yourprogram.[EMAIL PROTECTED]
wrote: try fromInt = fromInteger .
toIntegerthis does not seem like a good idea, as you start with an
Int,then convert it to an Integer, and then you make a Float out of
that.seems like a waste.hope this
helps-iavor Markus
-- Markus Schnell -Ursprüngliche
Nachricht- *Von:* [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] *Im Auftrag von *Stenio
*Gesendet:* Dienstag, 16. März 2004 10:29 *An:* Ketil Malde
*Cc:* [EMAIL PROTECTED] *Betreff:*
Re: [Haskell] Hugs Nov2003 X Nov2002 fromInteger works, but
it converts from Integer to Float. In my script, I need fromInt
because it converts from Int to Float.
Example: average :: Int - Float average n =
fromInt ( sum n ) :: Float / fromInt n :: Float It works
only in Hugs November 2002 Stenio. -
Mensagem Original De: "Ketil Malde"
[EMAIL PROTECTED] Para: "Stenio"
[EMAIL PROTECTED] Cópia: [EMAIL PROTECTED] Assunto:
Re: [Haskell] Hugs Nov2003 X Nov2002 Data: 16/03/04
12:07 "Stenio" [EMAIL PROTECTED]
writes: I was using Hugs November 2002 and the function
fromInt works fine, but in the version November 2003
the same function doesn´t work. I'm too lazy to check the
standard, so I'll just assume Hugs was wrong. I think the solution
is to use "fromIntegral" instead. GHCi also has "fromInteger",
although I'm not quite sure why we need this in addition to
"fromIntegral"? (Possibly because it is a member of Num, and it
would break too much code to remove it) -kzm
-- If I haven't seen further, it is by standing in the
footprints of
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