Hi,

On 3 May 2013 11:43, Tobias Dammers <tdammers@gmail.com> wrote:

> PS The proposal to fix Functor => Applicative => Monad has patches
> attached for GHC and base, but the backwards compatibility bogeyman
> always seems to trump something that will break a lot of code.

This kind of "breaks everything" changes would require something similar
to what Python is doing with the 2 -> 3 transition, and considering how
painfully slowly it is progressing there, I understand perfectly well why
people don't want to go there.

There is one very big advantage in the Haskell-world though.

Most of the struggle will be at the compile time. The biggest headache caused by

the Python 2 -> 3 transition is how you get a runtime error 2 weeks after you think

you've fixed everything!

(Yeah, I know code coverage analysis is an option when you don't have static

type checking, but ...)

Cheers,

Ozgur