Towards a prevalent alternative prelude?

Haskell Foundation
85

Deprecate partial functions from the Prelude, giving them new quarantined homes · Issue #70 · haskell/core-libraries-committee · GitHub :

andreasabel:

Gabriella439:

Gabriella439:

  • head :: a -> [a] -> a
head d []     = d
head _ (x:xs) = x

tail :: a -> [a] -> a
tail d []     = d
tail _ (_:xs) = xs

init :: a -> [a] -> [a]
init d []     = d
init _ [_]    = []
init d (x:xs) = xs : init d xs

last :: a -> [a] -> [a]
last d []     = d
last _ [x]    = x
last _ (_:xs) = last d xs

soupi:

  • module Tutorial_Prelude where
import Prelude hiding (
    head, tail, init, last, ...
)

emilypi: