Re: [Haskell-cafe] Generic typeclass for converting between types

Magnus Therning wrote:

On Fri, Jan 23, 2009 at 3:01 PM, John Goerzen wrote:

...

Hi folks,

I've been thinking today that I frequently need to convert data beween types:

* Between various numeric types

* Between various calendar types (both within the new calendar system, and between the old and new)

* Marshalling data back and forth to a database in HDBC

It's hard to remember all the functions to use to do these. I often resort to a chart I made for numeric conversions.

Not the type of response you want, but would you publish that chart somewhere, please ;-)

Sure :-) http://book.realworldhaskell.org/read/using-typeclasses.html#numerictypes.co... You might also find these useful: Typeclass instances for numeric types: http://book.realworldhaskell.org/read/using-typeclasses.html#numerictypes.ty... Chart of numeric functions: http://book.realworldhaskell.org/read/using-typeclasses.html#numerictypes.fu... -- John

/M