Portability	Non-portable (type synonym instances)
Stability	Experimental
Maintainer	Dan Doel
Safe Haskell	None

Text.Show.ByteString

Contents

The Show class
Putting Chars
Putting Strings
Putting digits
Putting integers
Putting floats
Combining builders
Printing values
Put

Description

Efficiently convert from values to lazy byte strings.

Synopsis

The Show class

class Show a where

Conversion of values to readable byte strings. Minimal complete definition: showp or showpPrec

Methods

showpPrec :: Int -> a -> Put

Encodes a value to an efficient byte string builder. The precedence is used to determine where to put parentheses in a shown expression involving operators.

Values of type Put can be efficiently combined, so the showp functions are available for showing multiple values before producing an output byte string.

showp :: a -> Put

Encodes a value to an efficient byte string builder. Values of type Put can be efficiently combined, so this is available for building strings from multiple values.

showpList :: [a] -> Put

Allows for specialized display of lists of values. This is used, for example, when showing arrays of Chars.

Instances

Show Bool
Show Char
Show Double
Show Float
Show Int
Show Int8
Show Int16
Show Int32
Show Int64
Show Integer
Show Ordering
Show Word
Show Word8
Show Word16
Show Word32
Show Word64
Show ()
Show Put
Show a => Show [a]
(Show a, Integral a) => Show (Ratio a)
Show a => Show (Maybe a)
Show e => Show (Set e)
(Show a, RealFloat a) => Show (Complex a)
(Show a, Show b) => Show (Either a b)
(Show a, Show b) => Show (a, b)
(Show k, Show v) => Show (Map k v)
(Show i, Show e, Ix i) => Show (Array i e)
(Show a, Show b, Show c) => Show (a, b, c)
(Show a, Show b, Show c, Show d) => Show (a, b, c, d)
(Show a, Show b, Show c, Show d, Show e) => Show (a, b, c, d, e)
(Show a, Show b, Show c, Show d, Show e, Show f) => Show (a, b, c, d, e, f)
(Show a, Show b, Show c, Show d, Show e, Show f, Show g) => Show (a, b, c, d, e, f, g)

show :: Show a => a -> ByteString

Encode a single value into a byte string

Putting Chars

putAscii :: Char -> Put

Writes a single Char to a byte string, assuming it's ascii.

putUTF8 :: Char -> Put

Writes a single Char to a byte string, properly UTF-8 encoded

Putting Strings

putAsciiStr :: String -> Put

Writes a string of ascii characters to a byte string

putUTF8Str :: String -> Put

Writes a string of unicode characters to a byte string, properly UTF-8 encoded

Putting digits

unsafePutDigit :: Int -> Put

Puts the decimal digit corresponding to the given Int without checking that it is in the interval [0,9]

putDigit :: Int -> Put

Puts the digit corresponding to the Int passed in.

Putting integers

showpIntAtBase :: Integral a => a -> (Int -> Char) -> a -> Put

Shows an Integral number using the base specified by the first argument and the chracter representation specified by the second.

Putting floats

showpGFloat :: RealFloat a => Maybe Int -> a -> Put

Show a signed RealFloat value using decimal notation when the absolute value lies between 0.1 and 9,999,999, and scientific notation otherwise. The optional integer can be used to specify precision.

showpFFloat :: RealFloat a => Maybe Int -> a -> Put

Show a signed RealFloat value using decimal notation. The optional integer can be used to specify precision.

showpEFloat :: RealFloat a => Maybe Int -> a -> Put

Show a signed RealFloat value using scientific (exponential) notation. The optional integer can be used to specify precision.

Combining builders

unlinesP :: [Put] -> Put

Merge several string builders, separating them by newlines

unwordsP :: [Put] -> Put

Merge several string builders, separating them by spaces

showpParen :: Bool -> Put -> Put

A utility function for surrounding output by parentheses conditionally.

Printing values

print :: Show a => a -> IO ()

Print a value to the standard output

Put

type Put = PutM ()

newtype PutM a

Constructors

Put
Fields unPut :: PairS a

Instances

Monad PutM
Functor PutM
Applicative PutM
Show Put

runPut :: Put -> ByteString