Re: [Haskell-cafe] package for algebraic structures

2009-02-20 Thread Wolfgang Jeltsch
Am Freitag, 20. Februar 2009 00:38 schrieben Sie: Wolfgang Jeltsch schrieb: Am Donnerstag, 19. Februar 2009 00:17 schrieben Sie: Do you mean this one: http://haskell.org/haskellwiki/Numeric_Prelude? There is currently no code for this, is there?

Re: [Haskell-cafe] package for algebraic structures

2009-02-20 Thread Henning Thielemann
On Fri, 20 Feb 2009, Wolfgang Jeltsch wrote: Am Freitag, 20. Februar 2009 00:38 schrieben Sie: Wolfgang Jeltsch schrieb: Am Donnerstag, 19. Februar 2009 00:17 schrieben Sie: Do you mean this one: http://haskell.org/haskellwiki/Numeric_Prelude? There is currently no code for this, is

Re: [Haskell-cafe] package for algebraic structures

2009-02-19 Thread Wolfgang Jeltsch
Am Donnerstag, 19. Februar 2009 00:17 schrieben Sie: On Tue, 17 Feb 2009, Wolfgang Jeltsch wrote: Now, a package only for one class with one method seems like overkill. However, it could serve as a start for a package of all kinds of algebraic structures. So I called the package “algebra”

Re: [Haskell-cafe] package for algebraic structures

2009-02-19 Thread Henning Thielemann
Wolfgang Jeltsch schrieb: Am Donnerstag, 19. Februar 2009 00:17 schrieben Sie: Do you mean this one: http://haskell.org/haskellwiki/Numeric_Prelude? There is currently no code for this, is there? http://hackage.haskell.org/cgi-bin/hackage-scripts/package/numeric-prelude

Re: [Haskell-cafe] package for algebraic structures

2009-02-19 Thread Henning Thielemann
On Thu, 19 Feb 2009, Wolfgang Jeltsch wrote: Am Donnerstag, 19. Februar 2009 00:17 schrieben Sie: Do you mean this one: http://haskell.org/haskellwiki/Numeric_Prelude? There is currently no code for this, is there? ???

Re: [Haskell-cafe] package for algebraic structures

2009-02-18 Thread Henning Thielemann
On Tue, 17 Feb 2009, Wolfgang Jeltsch wrote: Now, a package only for one class with one method seems like overkill. However, it could serve as a start for a package of all kinds of algebraic structures. So I called the package “algebra” and put it on Hackage. So if someone wants to implement

[Haskell-cafe] package for algebraic structures

2009-02-17 Thread Wolfgang Jeltsch
Hello, for Grapefruit’s incremental list signal support, I needed a type class of semigroups. A semigroup is similar to a monoid. The difference is that a semigroup doesn’t need to have a neutral element. So a semigroup type class would make a perfect superclass of Monoid, by the way. Since a