I wrote: >> In addition, OverloadedStrings is unsound. J. Garrett Morris wrote: > fromString can throw errors, just like fromInteger
This is true; the use of polymorphism for numeric literals is also unsound. However, in practice, it is rare for there to be dangerous instances of the numeric type classes. > this is no less sound than any Haskell function > throwing an exception. No. Usually, operations that can throw an exception are in the IO monad, where the specter of a potential exception is more obvious, and where the operation can be wrapped in try or catch. Whereas a string literal that might throw an exception at run time is bizarre, to say the least. And it is extremely difficult to deal with potential exceptions thrown by fundamental language syntax that is sprinkled throughout nearly every Haskell module in existence. Yitz _______________________________________________ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
