Anthony, maybe simply add var as a parameter and partially apply func in main? That'll give you the right type. Michal Original Message From: Tom Ellis Sent: Thursday, March 27, 2014 7:06 AM To: haskell-cafe@haskell.org Subject: Re: [Haskell-cafe] Main function variables made global. On Thu, Mar 27, 2014 at 10:58:45AM +0000, Chapman, Anthony Sergio wrote:
func w = w * var
I get the value of 'var' from a text file in the main function (as the user types the name of the file into terminal)
I need a way for 'func' to see what 'var' is without having to change it's type (ie make it into a function which take a 'w' and a 'var'.
The reason I can't change the type is that I then pass the function to a PSO module which has strict declarations of a function and I would rather not change the PSO module.
It's not quite clear to me what you're asking, but won't something like this do? do var <- readVar let func w = w * var let result = psoFunction func Tom _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe