6.1.1 Booleans
data Bool = False | True deriving
(Read, Show, Eq, Ord, Enum, Bounded)
11.1 Derived instances of Eq and Ord
...For example, for the Bool datatype, we have that (True > False) == True.
+1 For not changing the Ord instance for Bool. It would be disastrous. As an aside, is the Order instance for Bool in the report?
On Jan 22, 2016 12:24 PM, "Iavor Diatchki" <iavor.diatchki@gmail.com> wrote:Please don't change the ordering on Bool---it's been like that forever and it might lead to extremely subtle bugs that won't be caught by the compiler.I am ambivalent about adding an `implies` function as long as it is not automatically in scope. However, can anyone give some examples of usingthis in your code? All the ones I could think of would seem easier to follow when written with `if-then-else` or a guard.-IavorOn Thu, Jan 21, 2016 at 11:28 AM, Felipe Lessa <felipe.lessa@gmail.com> wrote:+1 for either Data.Bool.implies or Data.Bool.(==>).
+1 for right-associativity.
Cheers,
--
Felipe.
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