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                    2009
                
            
            
                17 Nov
                
                '09
                
            
            
            
        
    
                2:45 p.m.
            
        Am Dienstag 17 November 2009 20:36:46 schrieb Daniel Fischer:
What you probably wanted was
type MyHashTable = HashTable String Int -- not data MyHashTable
Just in case it's not clear:
ht <- new (==) dummy :: IO MyHashTable
only works at the prompt or in an IO do-block, not at the top level of the module.
then ht is a hashtable of type MyHashTable.