ALife.Creatur.Persistent

A state which persists between runs.

Documentation

data Persistent a

Instances

Checklist PersistentChecklist

Methods

status :: StateT PersistentChecklist IO Status

markDone :: String -> StateT PersistentChecklist IO ()

notStarted :: StateT PersistentChecklist IO Bool

done :: StateT PersistentChecklist IO Bool

setItems :: [String] -> StateT PersistentChecklist IO ()

delete :: String -> StateT PersistentChecklist IO ()

Counter PersistentCounter

Methods

current :: StateT PersistentCounter IO Int

increment :: StateT PersistentCounter IO ()

Eq a => Eq (Persistent a)

Methods

(==) :: Persistent a -> Persistent a -> Bool

(/=) :: Persistent a -> Persistent a -> Bool

Read a => Read (Persistent a)

Methods

readsPrec :: Int -> ReadS (Persistent a)

readList :: ReadS [Persistent a]

readPrec :: ReadPrec (Persistent a)

readListPrec :: ReadPrec [Persistent a]

Show a => Show (Persistent a)

Methods

showsPrec :: Int -> Persistent a -> ShowS

show :: Persistent a -> String

showList :: [Persistent a] -> ShowS

mkPersistent :: a -> FilePath -> Persistent a

Creates a counter that will store its value in the specified file.

getPS :: Read a => StateT (Persistent a) IO a

putPS :: (Show a, Read a) => a -> StateT (Persistent a) IO ()

modifyPS :: (Show a, Read a) => (a -> a) -> StateT (Persistent a) IO ()

runPS :: Read a => (a -> b) -> StateT (Persistent a) IO b