prime package:monoid-subclasses

primePrefix :: Factorial m => m -> m

monoid-subclasses Data.Semigroup.Factorial

The prime prefix; primePrefix mempty == mempty for monoids.

primeSuffix :: Factorial m => m -> m

monoid-subclasses Data.Semigroup.Factorial

The prime suffix; primeSuffix mempty == mempty for monoids.

splitPrimePrefix :: FactorialMonoid m => m -> Maybe (m, m)

monoid-subclasses Data.Monoid.Factorial

Splits the argument into its prime prefix and the remaining suffix. Returns Nothing for mempty.

splitPrimeSuffix :: FactorialMonoid m => m -> Maybe (m, m)

monoid-subclasses Data.Monoid.Factorial

Splits the argument into its prime suffix and the remaining prefix. Returns Nothing for mempty.