Re: Re[2]: getOpt return record of type a rather than [a]

On Dec 18, 2007 11:28 PM, Bulat Ziganshin wrote:

Hello Lemmih,

Wednesday, December 19, 2007, 1:22:43 AM, you wrote:

...

Indeed, we to this in HAppS, for instance. Folding the resulting list makes the current GetOpt implementation more than adequate.

this is problem important for me too - i have >50 options. can you please give us a small example of such approach?

Henning posted the specialized structure: data ArgDescr a = NoArg (a -> a) ReqArg (String -> a -> a) String OptArg (String -> a -> a) String which is a same as: type DirectArgDescr a = ArgDescr (a -> a) The "flags" can be combined using: foldr ($) emptyConfig flags. -- Cheers, Lemmih