I don't use rank-2 types that often and when I do I'm aware of the
restriction on ($) and similar hofs. I tend to use ($) only when the
right-hand side gets very messy; a multiple-line do or similar. For
example:
blah = fromMaybe $ do
x <- blah1
y <- blah2
guard (x == f y)
g x
The closing parenthesis would make things a little messy, so ($) is nice.
-David House, [EMAIL PROTECTED]
For this situation, I go ahead and name the subcomputation with a
where clause or a do-let binding. Usually, naming sub terms can't
hurt.
Other than "look at Darcs or GHC", has there been any efforts for
(very general, libertarian even) coding guidelines? "Suggestions &
tips" might be a better word.
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