How do I import Control.Monad.State?
I see this note in
http://en.wikibooks.org/wiki/Haskell/Understanding_monads/State
Note: in some package systems used for GHC, the Control.Monad.State module is
in a separate package, usually indicated by MTL (Monad Transformer Library).
Michael
On 28 July 2010 12:39, michael rice nowg...@yahoo.com wrote:
How do I import Control.Monad.State?
Install and use the mtl library (comes with the Haskell platform),
monads-fd (almost identical API to mtl; the point of this is that mtl
uses some extension: the non-extension bits are in the
[mich...@localhost ~]$ ghc-pkg list mtl
/usr/lib/ghc-6.12.1/package.conf.d
[mich...@localhost ~]$
Installed?
Michael
--- On Tue, 7/27/10, Ivan Miljenovic ivan.miljeno...@gmail.com wrote:
From: Ivan Miljenovic ivan.miljeno...@gmail.com
Subject: Re: [Haskell-cafe] Need Control.Monad.State
...@gmail.com wrote:
From: Ivan Miljenovic ivan.miljeno...@gmail.com
Subject: Re: [Haskell-cafe] Need Control.Monad.State
To: michael rice nowg...@yahoo.com
Cc: haskell-cafe@haskell.org
Date: Tuesday, July 27, 2010, 10:51 PM
On 28 July 2010 12:39, michael rice nowg...@yahoo.com wrote:
How do I
On Wed, Jul 28, 2010 at 12:04 AM, Ivan Miljenovic
ivan.miljeno...@gmail.com wrote:
On 28 July 2010 13:03, michael rice nowg...@yahoo.com wrote:
[mich...@localhost ~]$ ghc-pkg list mtl
/usr/lib/ghc-6.12.1/package.conf.d
[mich...@localhost ~]$
Installed?
No; if it was installed it would
See below. Lot's of warnings. Is the install OK? If so, can I use the same
*import*?
Michael
--- On Tue, 7/27/10, Ivan Miljenovic ivan.miljeno...@gmail.com wrote:
If it isn't installed, you can use cabal-install to install it:
cabal install mtl
--
Ivan Lazar Miljenovic
On 28 July 2010 13:17, michael rice nowg...@yahoo.com wrote:
See below. Lot's of warnings. Is the install OK? If so, can I use the same
*import*?
Yeah, the install is OK. The meaning of the warnings are:
* Warning: -fallow-undecidable-instances is deprecated: this GHC
option has changed
I didn't realize the State monad wasn't part of the base install. Any
particular reason for this?
-deech
On Tue, Jul 27, 2010 at 10:24 PM, Ivan Miljenovic ivan.miljeno...@gmail.com
wrote:
On 28 July 2010 13:17, michael rice nowg...@yahoo.com wrote:
See below. Lot's of warnings. Is the
On 28 July 2010 14:07, aditya siram aditya.si...@gmail.com wrote:
I didn't realize the State monad wasn't part of the base install. Any
particular reason for this?
Because there's no reason for it to be? GHC is bundled with enough
libraries as it is (and with the exception of Cabal, it's not
