[EMAIL PROTECTED] wrote: > If I may interject, that's precisely how a Scheme DB interface is > designed. The main function is a left-fold. Not quite though: it > provides for a premature termination: > > A major procedure: DB1:fold-left PROC INITIAL-SEED QUERY-OBJECT
Premature termination sounds like a useful property. I can see two ways this could be done: keep the previous signature, and use an exception to exit early, or add a boolean return value like the scheme version: doquery :: Process -> String -> (a -> b -> IO (b,Bool)) -> b -> IO b Any opinions on which alternative wouuld be preferable? Tim _______________________________________________ Haskell-Cafe mailing list [EMAIL PROTECTED] http://www.haskell.org/mailman/listinfo/haskell-cafe
