| Also if stmt =
|
| SomeModule.prettyPrinter "foobar"
|
| and SomeModule contains
|
| prettyPrinter x = putStrLn $ "Pretty: " ++ x
|
| then the let binding will not catch it.
Indeed, that's exactly what I meant in my original msg. I have always thought
it ugly that stdin and stdout are top-level definitions. I want to be able to
say
withStdout :: Handle -> IO a -> IO a
so that (withStdout h a) runs 'a' but sends all std-out output to h.
Haskell should support this. Starting a whole OS process to redirect stdout
must surely be overkill!
(But maybe that is what you have to do today.)
S
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