27 Apr
2006
27 Apr
'06
4:09 p.m.
On 27.04 12:32, Mirko Rahn wrote:
So it would be much better to define the options in the library and to provide this definitions to the user program somehow. I tought about this topic several times and came up with a solution that works for me but is far from being perfect. It uses existentials and a main disadvantage is the need of explicit traversing. Moreover some new boilerplate code is necessary.
HAppS has a typeclass for this kind of thing also: http://test.happs.org/auto/apidoc/HAppS-Util-StdMain-Config.html http://test.happs.org/HAppS/src/HAppS/Util/StdMain/Config.hs and for an example instance see: http://test.happs.org/HAppS/src/HAppS/Protocols/SimpleHTTP.hs - Einar Karttunen