Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
Example usage of Control.Eff
- writeAll :: (Typeable a, Member (Writer a) e) => [a] -> Eff e ()
- sumAll :: (Typeable a, Num a, Member (State a) e) => [a] -> Eff e ()
- writeAndAdd :: (Member (Writer a) e, Member (State a) e, Num a, Typeable a) => [a] -> Eff e ()
- sumEff :: (Num a, Typeable a) => [a] -> a
- lastEff :: Typeable a => [a] -> Maybe a
- lastAndSum :: (Typeable a, Num a) => [a] -> (Maybe a, a)
Documentation
writeAll :: (Typeable a, Member (Writer a) e) => [a] -> Eff e () Source
Write the elements of a list of numbers, in order.
sumAll :: (Typeable a, Num a, Member (State a) e) => [a] -> Eff e () Source
Add a list of numbers to the current state.
writeAndAdd :: (Member (Writer a) e, Member (State a) e, Num a, Typeable a) => [a] -> Eff e () Source
Write a list of numbers and add them to the current state.
lastEff :: Typeable a => [a] -> Maybe a Source
Safely get the last element of a list. Nothing for empty lists; Just the last element otherwise.
lastAndSum :: (Typeable a, Num a) => [a] -> (Maybe a, a) Source
Get the last element and sum of a list