Safe Haskell	Safe-Inferred

Lvm.Common.Byte

Synopsis

Documentation

type Byte = Word8 Source

data Bytes Source

Instances

Eq Bytes
Show Bytes
Monoid Bytes

class Monoid a where

The class of monoids (types with an associative binary operation that has an identity). Instances should satisfy the following laws:

```
mappend mempty x = x
```
```
mappend x mempty = x
```

mappend x (mappend y z) = mappend (mappend x y) z

```
mconcat = foldr mappend mempty
```

The method names refer to the monoid of lists under concatenation, but there are many other instances.

Minimal complete definition: mempty and mappend.

Some types can be viewed as a monoid in more than one way, e.g. both addition and multiplication on numbers. In such cases we often define newtypes and make those instances of Monoid, e.g. Sum and Product.

Methods

mempty :: a

Identity of mappend

mappend :: a -> a -> a

An associative operation

mconcat :: [a] -> a

Fold a list using the monoid. For most types, the default definition for mconcat will be used, but the function is included in the class definition so that an optimized version can be provided for specific types.

Instances

Monoid Ordering
Monoid ()
Monoid All
Monoid Any
Monoid IntSet
Monoid Bytes
Monoid [a]
Monoid a => Monoid (Dual a)
Monoid (Endo a)
Num a => Monoid (Sum a)
Num a => Monoid (Product a)
Monoid (First a)
Monoid (Last a)
Monoid a => Monoid (Maybe a)	Lift a semigroup into `Maybe` forming a `Monoid` according to http://en.wikipedia.org/wiki/Monoid: "Any semigroup `S` may be turned into a monoid simply by adjoining an element `e` not in `S` and defining `ee = e` and `es = s = s*e` for all `s ∈ S`." Since there is no "Semigroup" typeclass providing just `mappend`, we use `Monoid` instead.
Monoid (IntMap a)
Ord a => Monoid (Set a)
Monoid b => Monoid (a -> b)
(Monoid a, Monoid b) => Monoid (a, b)
(Monoid a, Monoid b, Monoid c) => Monoid (a, b, c)
(Monoid a, Monoid b, Monoid c, Monoid d) => Monoid (a, b, c, d)
(Monoid a, Monoid b, Monoid c, Monoid d, Monoid e) => Monoid (a, b, c, d, e)

unit :: Byte -> Bytes Source

isEmpty :: Bytes -> Bool Source

bytesLength :: Bytes -> Int Source

writeBytes :: FilePath -> Bytes -> IO ()Source

bytesFromList :: [Byte] -> Bytes Source

listFromBytes :: Bytes -> [Byte]Source

bytesFromString :: String -> Bytes Source

stringFromBytes :: Bytes -> String Source

bytesFromInt32 :: Int -> Bytes Source

byteFromInt8 :: Int -> Byte Source

readByteList :: FilePath -> IO [Byte]Source

int32FromByteList :: [Byte] -> (Int, [Byte])Source

stringFromByteList :: [Byte] -> String Source

bytesFromByteList :: [Byte] -> Bytes Source