Hmm no, I can’t say that I’ve ever writen code like that. For one, it might be better to use loop :: (a -> Either a b) -> a -> b instead so that you don’t have to sort through the result afterwards with find.
I’m not sure exactly what you’re trying to do, but maybe using the State monad could be a good idea? If a is an object with fields that you want to be able to read and update that sounds a bit like what you might want to use State for. This can be combined with maybe something from the loop section of Control.Monad.Extra to make the intention of the code a bit clearer.
If performance is critical you might be better of using a different language anyway (Haskell performance is okay but not amazing) but otherwise I don’t think that this is really gonna slow down your code unacceptably much.
Hmm no, I can’t say that I’ve ever writen code like that. For one, it might be better to use
loop :: (a -> Either a b) -> a -> binstead so that you don’t have to sort through the result afterwards withfind.I’m not sure exactly what you’re trying to do, but maybe using the
Statemonad could be a good idea? Ifais an object with fields that you want to be able to read and update that sounds a bit like what you might want to useStatefor. This can be combined with maybe something from the loop section of Control.Monad.Extra to make the intention of the code a bit clearer.If performance is critical you might be better of using a different language anyway (Haskell performance is okay but not amazing) but otherwise I don’t think that this is really gonna slow down your code unacceptably much.