how can I run ghci monad actions from ghci command line

Simon Marlow marlowsd at gmail.com
Mon Jan 26 11:49:52 EST 2009


Peter Hercek wrote:
> Is it possible to run ghci monad actions from ghci command line somehow?
> 
> For example: I would like to check whether "it" variable is of type Bool 
> and whether it is True using normal Haskell code (i.e. not using ghci 
> commands starting with colon like :type :print).

There's no way to do that right now, although you can play tricks with 
:define to pipe the output of GHCi commands into Haskell code.  Look up 
Claus Reinke's example macros - they're on one of the wikis somewhere, but 
I don't seem to be able to find them with Google right now.

Cheers,
	Simon


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