Show -cgi

class Show a
base Prelude, base Text.Show
Conversion of values to readable Strings. Minimal complete definition: showsPrec or show. Derived instances of Show have the following properties, which are compatible with derived instances of Text.Read.Read: * The result of show is a syntactically correct Haskell expression containing only constants, given the fixity declarations in force at the point 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 than d (associativity is ignored). Thus, if d is 0 then the result is never surrounded in parentheses; if d is 11 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) > > showsPrec d (Leaf m) = showParen (d > app_prec) $ > showString "Leaf " . showsPrec (app_prec+1) m > > > showsPrec d (u (:^:) v) = showParen (d > up_prec) $ > showsPrec (up_prec+1) u . > showString " (:^:) " . > showsPrec (up_prec+1) v > Note that right-associativity of :^: is ignored. For example, * show (Leaf 1 (:^:) Leaf 2 (:^:) Leaf 3) produces the string "Leaf 1 (:^:) (Leaf 2 (:^:) Leaf 3)".
module Text.Show
base Text.Show
Converting values to readable strings: the Show class and associated functions.
type ShowS = String -> String
base Prelude, base Text.Show
The shows functions return a function that prepends the output String to an existing String. This allows constant-time concatenation of results using function composition.
package ShowF
package
Provides a Show-like class for * -> * Version 0.1.1
Shown :: WindowStatus
GLUT Graphics.UI.GLUT.Window
show :: Show a => a -> String
base Prelude, base Text.Show
package show
package
Show instances for functions and IO procedures Version 0.6
showChar :: Char -> ShowS
base Prelude, base Text.Show
utility function converting a Char to a show function that simply prepends the character unchanged.
showList :: Show a => [a] -> ShowS
base Prelude, base Text.Show
showParen :: Bool -> ShowS -> ShowS
base Prelude, base Text.Show
utility function that surrounds the inner show function with parentheses when the Bool parameter is True.
shows :: Show a => a -> ShowS
base Prelude, base Text.Show
equivalent to showsPrec with a precedence of 0.
showsPrec :: Show a => Int -> a -> ShowS
base Prelude, base Text.Show
showString :: String -> ShowS
base Prelude, base Text.Show
utility function converting a String to a show function that simply prepends the string unchanged.
showConstr :: Constr -> String
base Data.Data
Gets the string for a constructor
showEFloat :: RealFloat a => Maybe Int -> a -> ShowS
base Numeric
Show a signed RealFloat value using scientific (exponential) notation (e.g. 2.45e2, 1.5e-3). In the call showEFloat digs val, if digs is Nothing, the value is shown to full precision; if digs is Just d, then at most d digits after the decimal point are shown.
showFFloat :: RealFloat a => Maybe Int -> a -> ShowS
base Numeric
Show a signed RealFloat value using standard decimal notation (e.g. 245000, 0.0015). In the call showFFloat digs val, if digs is Nothing, the value is shown to full precision; if digs is Just d, then at most d digits after the decimal point are shown.
showFixed :: HasResolution a => Bool -> Fixed a -> String
base Data.Fixed
First arg is whether to chop off trailing zeros
showFloat :: RealFloat a => a -> ShowS
base Numeric
Show a signed RealFloat value to full precision using standard decimal notation for arguments whose absolute value lies between 0.1 and 9,999,999, and scientific notation otherwise.
showGFloat :: RealFloat a => Maybe Int -> a -> ShowS
base Numeric
Show a signed RealFloat value using standard decimal notation for arguments whose absolute value lies between 0.1 and 9,999,999, and scientific notation otherwise. In the call showGFloat digs val, if digs is Nothing, the value is shown to full precision; if digs is Just d, then at most d digits after the decimal point are shown.
showHex :: Integral a => a -> ShowS
base Numeric
Show non-negative Integral numbers in base 16.

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