3 ms·

Personally, I'm most glad to see that Applicative is finally a superclass of Monad.

• jordigh 12y ago
  Whoa, I never thought that would get fixed. It's been, what, 20 years? :-) So why wasn't it done earlier? Is there going to be any code breakage with that?
  • pseudonom- 12y ago
    There have been deprecation warnings (since 7.8?) about the AMP: https://wiki.haskell.org/Functor-Applicative-Monad_Proposal#Applying_the_AMP_to_GHC_and_then_Haskell_in_practice https://wiki.haskell.org/Functor-Applicative-Monad_Proposal#... There's a list of breakage at: https://www.fpcomplete.com/blog/2015/03/stackage-ghc-7-10 https://www.fpcomplete.com/blog/2015/03/stackage-ghc-7-10 (I'm not sure what portion of that is due to AMP.)
  • tome 12y ago
    I think Applicative was introduced within the last 10 years. The paper that introduced them was published in 2008 (Applicative Programming with Effects, Conor McBride and Ross Paterson)
    • tel 12y ago
      That just drives home how long it's been the case that Applicative wasn't a superclass of Monad! ;)
    • jordigh 12y ago
      What if you count the total length of time that monads have not been "officially" applicative functors?