Safe Haskell | Safe |
---|---|
Language | Haskell2010 |
This module reexports the six necessary type classes that every Rule
type must support.
You can use this module to define new rules without depending on the binary
, deepseq
and hashable
packages.
Documentation
Conversion of values to readable String
s.
Derived instances of Show
have the following properties, which
are compatible with derived instances of Read
:
- The result of
show
is a syntactically correct Haskell expression containing only constants, given the fixity declarations in force at the point where the type is declared. It contains only the constructor names defined in the data type, parentheses, and spaces. When labelled constructor fields are used, braces, commas, field names, and equal signs are also used. - If the constructor is defined to be an infix operator, then
showsPrec
will produce infix applications of the constructor. - the representation will be enclosed in parentheses if the
precedence of the top-level constructor in
x
is less thand
(associativity is ignored). Thus, ifd
is0
then the result is never surrounded in parentheses; ifd
is11
it is always surrounded in parentheses, unless it is an atomic expression. - If the constructor is defined using record syntax, then
show
will produce the record-syntax form, with the fields given in the same order as the original declaration.
For example, given the declarations
infixr 5 :^: data Tree a = Leaf a | Tree a :^: Tree a
the derived instance of Show
is equivalent to
instance (Show a) => Show (Tree a) where showsPrec d (Leaf m) = showParen (d > app_prec) $ showString "Leaf " . showsPrec (app_prec+1) m where app_prec = 10 showsPrec d (u :^: v) = showParen (d > up_prec) $ showsPrec (up_prec+1) u . showString " :^: " . showsPrec (up_prec+1) v where up_prec = 5
Note that right-associativity of :^:
is ignored. For example,
produces the stringshow
(Leaf 1 :^: Leaf 2 :^: Leaf 3)"Leaf 1 :^: (Leaf 2 :^: Leaf 3)"
.
The class Typeable
allows a concrete representation of a type to
be calculated.
The Eq
class defines equality (==
) and inequality (/=
).
All the basic datatypes exported by the Prelude are instances of Eq
,
and Eq
may be derived for any datatype whose constituents are also
instances of Eq
.
Eq Bool | |
Eq Char | |
Eq Double | |
Eq Float | |
Eq Int | |
Eq Int8 | |
Eq Int16 | |
Eq Int32 | |
Eq Int64 | |
Eq Integer | |
Eq Ordering | |
Eq Word | |
Eq Word8 | |
Eq Word16 | |
Eq Word32 | |
Eq Word64 | |
Eq TypeRep | |
Eq () | |
Eq TyCon | |
Eq Handle | |
Eq BigNat | |
Eq SpecConstrAnnotation | |
Eq Natural | |
Eq Void | |
Eq Constr | Equality of constructors |
Eq DataRep | |
Eq ConstrRep | |
Eq Fixity | |
Eq Version | |
Eq Unique | |
Eq HandlePosn | |
Eq CDev | |
Eq CIno | |
Eq CMode | |
Eq COff | |
Eq CPid | |
Eq CSsize | |
Eq CGid | |
Eq CNlink | |
Eq CUid | |
Eq CCc | |
Eq CSpeed | |
Eq CTcflag | |
Eq CRLim | |
Eq Fd | |
Eq ThreadId | |
Eq BlockReason | |
Eq ThreadStatus | |
Eq Errno | |
Eq AsyncException | |
Eq ArrayException | |
Eq ExitCode | |
Eq IOErrorType | |
Eq BufferMode | |
Eq Newline | |
Eq NewlineMode | |
Eq WordPtr | |
Eq IntPtr | |
Eq CChar | |
Eq CSChar | |
Eq CUChar | |
Eq CShort | |
Eq CUShort | |
Eq CInt | |
Eq CUInt | |
Eq CLong | |
Eq CULong | |
Eq CLLong | |
Eq CULLong | |
Eq CFloat | |
Eq CDouble | |
Eq CPtrdiff | |
Eq CSize | |
Eq CWchar | |
Eq CSigAtomic | |
Eq CClock | |
Eq CTime | |
Eq CUSeconds | |
Eq CSUSeconds | |
Eq CIntPtr | |
Eq CUIntPtr | |
Eq CIntMax | |
Eq CUIntMax | |
Eq IODeviceType | |
Eq SeekMode | |
Eq All | |
Eq Any | |
Eq Fixity | |
Eq Associativity | |
Eq SourceUnpackedness | |
Eq SourceStrictness | |
Eq DecidedStrictness | |
Eq MaskingState | |
Eq IOException | |
Eq ErrorCall | |
Eq ArithException | |
Eq Fingerprint | |
Eq SomeNat | |
Eq SomeSymbol | |
Eq IOMode | |
Eq Lexeme | |
Eq Number | |
Eq GeneralCategory | |
Eq SrcLoc | |
Eq ShortByteString | |
Eq ByteString | |
Eq ByteString | |
Eq IntSet | |
Eq DirectoryType | |
Eq Permissions | |
Eq XdgDirectory | |
Eq LocalTime | |
Eq TimeOfDay | |
Eq TimeZone | |
Eq UTCTime | |
Eq NominalDiffTime | |
Eq Day | |
Eq UniversalTime | |
Eq DiffTime | |
Eq Timeout | |
Eq Flot | |
Eq Progress # | |
Eq Resource # | |
Eq CmdOption # | |
Eq EqualCost # | |
Eq Verbosity # | |
Eq Change # | |
Eq Lint # | |
Eq Assume # | |
Eq a => Eq [a] | |
Eq a => Eq (Maybe a) | |
Eq a => Eq (Ratio a) | |
Eq (StablePtr a) | |
Eq (Ptr a) | |
Eq (FunPtr a) | |
Eq (V1 p) | |
Eq (U1 p) | |
Eq p => Eq (Par1 p) | |
Eq (ForeignPtr a) | |
Eq a => Eq (Identity a) | |
Eq a => Eq (Min a) | |
Eq a => Eq (Max a) | |
Eq a => Eq (First a) | |
Eq a => Eq (Last a) | |
Eq m => Eq (WrappedMonoid m) | |
Eq a => Eq (Option a) | |
Eq a => Eq (NonEmpty a) | |
Eq (Fixed a) | |
Eq a => Eq (Complex a) | |
Eq (StableName a) | |
Eq (Chan a) | |
Eq a => Eq (ZipList a) | |
Eq (TVar a) | |
Eq a => Eq (Dual a) | |
Eq a => Eq (Sum a) | |
Eq a => Eq (Product a) | |
Eq a => Eq (First a) | |
Eq a => Eq (Last a) | |
Eq (IORef a) | |
Eq a => Eq (Down a) | |
Eq (MVar a) | |
Eq a => Eq (Tree a) | |
Eq a => Eq (Seq a) | |
Eq a => Eq (ViewL a) | |
Eq a => Eq (ViewR a) | |
Eq a => Eq (IntMap a) | |
Eq a => Eq (Set a) | |
(Hashable a, Eq a) => Eq (HashSet a) | |
(Eq a, Eq b) => Eq (Either a b) | |
Eq (f p) => Eq (Rec1 f p) | |
Eq (URec Char p) | |
Eq (URec Double p) | |
Eq (URec Float p) | |
Eq (URec Int p) | |
Eq (URec Word p) | |
Eq (URec (Ptr ()) p) | |
(Eq a, Eq b) => Eq (a, b) | |
(Ix ix, Eq e, IArray UArray e) => Eq (UArray ix e) | |
(Ix i, Eq e) => Eq (Array i e) | |
Eq a => Eq (Arg a b) | |
Eq (Proxy k s) | |
Eq (STRef s a) | |
(Eq k, Eq a) => Eq (Map k a) | |
(Eq k, Eq v) => Eq (Leaf k v) | |
(Eq k, Eq v) => Eq (HashMap k v) | |
Eq c => Eq (K1 i c p) | |
(Eq (f p), Eq (g p)) => Eq ((:+:) f g p) | |
(Eq (f p), Eq (g p)) => Eq ((:*:) f g p) | |
Eq (f (g p)) => Eq ((:.:) f g p) | |
(Eq a, Eq b, Eq c) => Eq (a, b, c) | |
Eq (STUArray s i e) | |
Eq (STArray s i e) | |
Eq a => Eq (Const k a b) | |
Eq (f a) => Eq (Alt k f a) | |
Eq (Coercion k a b) | |
Eq ((:~:) k a b) | |
(Eq w, Eq1 m, Eq a) => Eq (WriterT w m a) | |
Eq (f p) => Eq (M1 i c f p) | |
(Eq a, Eq b, Eq c, Eq d) => Eq (a, b, c, d) | |
(Eq a, Eq b, Eq c, Eq d, Eq e) => Eq (a, b, c, d, e) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f) => Eq (a, b, c, d, e, f) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g) => Eq (a, b, c, d, e, f, g) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h) => Eq (a, b, c, d, e, f, g, h) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i) => Eq (a, b, c, d, e, f, g, h, i) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j) => Eq (a, b, c, d, e, f, g, h, i, j) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k) => Eq (a, b, c, d, e, f, g, h, i, j, k) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l) => Eq (a, b, c, d, e, f, g, h, i, j, k, l) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m, Eq n) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m, n) | |
(Eq a, Eq b, Eq c, Eq d, Eq e, Eq f, Eq g, Eq h, Eq i, Eq j, Eq k, Eq l, Eq m, Eq n, Eq o) => Eq (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) | |
Nothing
The Binary
class provides put
and get
, methods to encode and
decode a Haskell value to a lazy ByteString
. It mirrors the Read
and
Show
classes for textual representation of Haskell types, and is
suitable for serialising Haskell values to disk, over the network.
For decoding and generating simple external binary formats (e.g. C
structures), Binary may be used, but in general is not suitable
for complex protocols. Instead use the Put
and Get
primitives
directly.
Instances of Binary should satisfy the following property:
decode . encode == id
That is, the get
and put
methods should be the inverse of each
other. A range of instances are provided for basic Haskell types.
Nothing
A class of types that can be fully evaluated.
Since: 1.1.0.0
Nothing
NFData Bool | |
NFData Char | |
NFData Double | |
NFData Float | |
NFData Int | |
NFData Int8 | |
NFData Int16 | |
NFData Int32 | |
NFData Int64 | |
NFData Integer | |
NFData Word | |
NFData Word8 | |
NFData Word16 | |
NFData Word32 | |
NFData Word64 | |
NFData CallStack | Since: 1.4.2.0 |
NFData TypeRep | NOTE: Only defined for Since: 1.4.0.0 |
NFData () | |
NFData TyCon | NOTE: Only defined for Since: 1.4.0.0 |
NFData Natural | Since: 1.4.0.0 |
NFData Void | Since: 1.4.0.0 |
NFData Version | Since: 1.3.0.0 |
NFData Unique | Since: 1.4.0.0 |
NFData ThreadId | Since: 1.4.0.0 |
NFData ExitCode | Since: 1.4.2.0 |
NFData CChar | Since: 1.4.0.0 |
NFData CSChar | Since: 1.4.0.0 |
NFData CUChar | Since: 1.4.0.0 |
NFData CShort | Since: 1.4.0.0 |
NFData CUShort | Since: 1.4.0.0 |
NFData CInt | Since: 1.4.0.0 |
NFData CUInt | Since: 1.4.0.0 |
NFData CLong | Since: 1.4.0.0 |
NFData CULong | Since: 1.4.0.0 |
NFData CLLong | Since: 1.4.0.0 |
NFData CULLong | Since: 1.4.0.0 |
NFData CFloat | Since: 1.4.0.0 |
NFData CDouble | Since: 1.4.0.0 |
NFData CPtrdiff | Since: 1.4.0.0 |
NFData CSize | Since: 1.4.0.0 |
NFData CWchar | Since: 1.4.0.0 |
NFData CSigAtomic | Since: 1.4.0.0 |
NFData CClock | Since: 1.4.0.0 |
NFData CTime | Since: 1.4.0.0 |
NFData CUSeconds | Since: 1.4.0.0 |
NFData CSUSeconds | Since: 1.4.0.0 |
NFData CFile | Since: 1.4.0.0 |
NFData CFpos | Since: 1.4.0.0 |
NFData CJmpBuf | Since: 1.4.0.0 |
NFData CIntPtr | Since: 1.4.0.0 |
NFData CUIntPtr | Since: 1.4.0.0 |
NFData CIntMax | Since: 1.4.0.0 |
NFData CUIntMax | Since: 1.4.0.0 |
NFData All | Since: 1.4.0.0 |
NFData Any | Since: 1.4.0.0 |
NFData Fingerprint | Since: 1.4.0.0 |
NFData SrcLoc | Since: 1.4.2.0 |
NFData ShortByteString | |
NFData ByteString | |
NFData ByteString | |
NFData IntSet | |
NFData LocalTime | |
NFData ZonedTime | |
NFData TimeOfDay | |
NFData TimeZone | |
NFData UTCTime | |
NFData NominalDiffTime | |
NFData Day | |
NFData UniversalTime | |
NFData DiffTime | |
NFData a => NFData [a] | |
NFData a => NFData (Maybe a) | |
NFData a => NFData (Ratio a) | |
NFData (Ptr a) | Since: 1.4.2.0 |
NFData (FunPtr a) | Since: 1.4.2.0 |
NFData a => NFData (Identity a) | Since: 1.4.0.0 |
NFData a => NFData (Min a) | Since: 1.4.2.0 |
NFData a => NFData (Max a) | Since: 1.4.2.0 |
NFData a => NFData (First a) | Since: 1.4.2.0 |
NFData a => NFData (Last a) | Since: 1.4.2.0 |
NFData m => NFData (WrappedMonoid m) | Since: 1.4.2.0 |
NFData a => NFData (Option a) | Since: 1.4.2.0 |
NFData a => NFData (NonEmpty a) | Since: 1.4.2.0 |
NFData (Fixed a) | Since: 1.3.0.0 |
NFData a => NFData (Complex a) | |
NFData (StableName a) | Since: 1.4.0.0 |
NFData a => NFData (ZipList a) | Since: 1.4.0.0 |
NFData a => NFData (Dual a) | Since: 1.4.0.0 |
NFData a => NFData (Sum a) | Since: 1.4.0.0 |
NFData a => NFData (Product a) | Since: 1.4.0.0 |
NFData a => NFData (First a) | Since: 1.4.0.0 |
NFData a => NFData (Last a) | Since: 1.4.0.0 |
NFData (IORef a) | NOTE: Only strict in the reference and not the referenced value. Since: 1.4.2.0 |
NFData a => NFData (Down a) | Since: 1.4.0.0 |
NFData (MVar a) | NOTE: Only strict in the reference and not the referenced value. Since: 1.4.2.0 |
NFData a => NFData (Digit a) | |
NFData a => NFData (Node a) | |
NFData a => NFData (Elem a) | |
NFData a => NFData (FingerTree a) | |
NFData a => NFData (Tree a) | |
NFData a => NFData (Seq a) | |
NFData a => NFData (IntMap a) | |
NFData a => NFData (Set a) | |
NFData a => NFData (HashSet a) | |
NFData (a -> b) | This instance is for convenience and consistency with Since: 1.3.0.0 |
(NFData a, NFData b) => NFData (Either a b) | |
(NFData a, NFData b) => NFData (a, b) | |
(NFData a, NFData b) => NFData (Array a b) | |
(NFData a, NFData b) => NFData (Arg a b) | Since: 1.4.2.0 |
NFData (Proxy k a) | Since: 1.4.0.0 |
NFData (STRef s a) | NOTE: Only strict in the reference and not the referenced value. Since: 1.4.2.0 |
(NFData k, NFData a) => NFData (Map k a) | |
(NFData k, NFData v) => NFData (Leaf k v) | |
(NFData k, NFData v) => NFData (HashMap k v) | |
(NFData a, NFData b, NFData c) => NFData (a, b, c) | |
NFData a => NFData (Const k a b) | Since: 1.4.0.0 |
(NFData a, NFData b, NFData c, NFData d) => NFData (a, b, c, d) | |
(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5) => NFData (a1, a2, a3, a4, a5) | |
(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6) => NFData (a1, a2, a3, a4, a5, a6) | |
(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7) => NFData (a1, a2, a3, a4, a5, a6, a7) | |
(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7, NFData a8) => NFData (a1, a2, a3, a4, a5, a6, a7, a8) | |
(NFData a1, NFData a2, NFData a3, NFData a4, NFData a5, NFData a6, NFData a7, NFData a8, NFData a9) => NFData (a1, a2, a3, a4, a5, a6, a7, a8, a9) | |