[Haskell-beginners] Config data

[Sumit Sahrawat, Maths & Computing, IIT (BHU)]

Yeah, sorry I missed the last line on my first read.

The link I gave you also explains how to achieve the same functionality as
global variables without using them.
The unsafePerformIO hack works, but for small modules it's much more
helpful to do it safely.

On 7 June 2015 at 00:37, mike h <mike_k_houghton at yahoo.co.uk> wrote:

> Global state is an option - thanks. Didn't think Haskell allowed this.
>
> Having three modules may be more logical but doesn't it just put the same
> problem into the new module?
>
> Thanks
>
>
>
>   On Saturday, 6 June 2015, 19:43, Mike Houghton <
> mike_k_houghton at yahoo.co.uk> wrote:
>
>
> Hi,
>
> I’ve haskell files  parser.hs and email.hs
> email.hs is a module imported into parser and parser has the main.
>
> email has various passwords and server names needed to connect and send
> email. I want to have those details in a config file and read it  in at
> start - using say config module.  I’m ok with this part but the
> practicality of doing it eludes me...
>
> It seems to me that email module can either get the config details itself
> or be told them by parser. If email wants to get them how would it do this?
> It does not have a main that gets run so can’t load a config file.(can it
> ??)
>
> However parser can load the config in its main and then tell mail what the
> values are but how would mail save them?
>
> Of course I could chanage the signatures of the email send/receive
> functions in mail  to take the connection details but that seems wrong.
>
> Thanks
>
> Mike
>
>
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-- 
Regards

Sumit Sahrawat
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