Changes between Initial Version and Version 1 of Ticket #9334, comment 13


Ignore:
Timestamp:
Aug 24, 2016 5:24:20 PM (3 years ago)
Author:
Iceland_jack
Comment:

Legend:

Unmodified
Added
Removed
Modified
  • Ticket #9334, comment 13

    initial v1  
    22>   2. "Fails instances", which are of the form `instance Num Char fails`; they enable programmers to state explicitly that an instance should never exits.  Interestingly, I just found a very related ticket asking for the same sort of thing (#7775).
    33
    4 Using `Any` as a superclass we can effectively [https://gist.github.com/Icelandjack/5afdaa32f41adf3204ef9025d9da2a70#hackage-no-instances-allowed forbid instances], of course the compiler is not privy to this.
     4In case this is relevant: Using `Any` as a superclass we can effectively [https://gist.github.com/Icelandjack/5afdaa32f41adf3204ef9025d9da2a70#hackage-no-instances-allowed forbid all instances], of course the compiler is not privy to this.