Sean Leather wrote:
To me, the syntax is not actually stricter, just that the precedence for
labeled field construction, update, & pattern is lower. What is the
effective new precedence with this change? Previously, it was 11 (or simply
"higher than 10"). Is it now equivalent to function application (10)?
maybe it's equivalent "infix 10" (not infixr/infixl) so that it doesn't
associate with function application (or itself) at all, either left- or
right- ly. I didn't understand by reading the patch to the report...
Ian Lynagh wrote:
I think that even an example of where parentheses are needed would be
noise in the report. I don't think the report generally gives examples
for this sort of thing, e.g. I don't think there's an example to
demonstrate that this is invalid without parentheses:
id if True then 'a' else 'b'
Well that's also something that in my opinion there *should* be an
example for, because IMHO there's no obvious reason why it's banned
(whereas most of the Report's syntax repeats things that should be
obvious and necessary to anyone who knows Haskell).
-Isaac
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