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1. trackNumberGetter :: TagGetter (Maybe TrackNumber)

   htaglib	Sound.HTagLib

   Getter to retrieve the track number (returns Nothing if the data is missing).

2. trackNumberSetter :: Maybe TrackNumber -> TagSetter

   htaglib	Sound.HTagLib

   Setter for the track number, use Nothing to clear the field.

3. unTrackNumber :: TrackNumber -> Int

   htaglib	Sound.HTagLib

   Convert TrackNumber to Int.

4. maxNumbers :: Size -> Int

   http2	Network.HPACK.Internal

   How many entries can be stored in a dynamic table?

5. type ColumnNumber = Int

   ihaskell	IHaskell.Eval.Parser

   A column number in an input string.

6. type LineNumber = Int

   ihaskell	IHaskell.Eval.Parser

   A line number in an input string.

7. tagToEnum# :: Int# -> a

   ihaskell	IHaskellPrelude

   No documentation available.

8. class Enum a

   incipit-base	Incipit.Base

   Class Enum defines operations on sequentially ordered types. The enumFrom... methods are used in Haskell's translation of arithmetic sequences. Instances of Enum may be derived for any enumeration type (types whose constructors have no fields). The nullary constructors are assumed to be numbered left-to-right by fromEnum from 0 through n-1. See Chapter 10 of the Haskell Report for more details. For any type that is an instance of class Bounded as well as Enum, the following should hold:

   • The calls succ maxBound and pred minBound should result in a runtime error.
   • fromEnum and toEnum should give a runtime error if the result value is not representable in the result type. For example, toEnum 7 :: Bool is an error.
   • enumFrom and enumFromThen should be defined with an implicit bound, thus:

   enumFrom     x   = enumFromTo     x maxBound
   enumFromThen x y = enumFromThenTo x y bound
   where
   bound | fromEnum y >= fromEnum x = maxBound
   | otherwise                = minBound
   

9. enumFrom :: Enum a => a -> [a]

   incipit-base	Incipit.Base

   Used in Haskell's translation of [n..] with [n..] = enumFrom n, a possible implementation being enumFrom n = n : enumFrom (succ n).

   Examples

   • enumFrom 4 :: [Integer] = [4,5,6,7,...]

   • enumFrom 6 :: [Int] = [6,7,8,9,...,maxBound ::
     Int]

10. enumFromThen :: Enum a => a -> a -> [a]

    incipit-base	Incipit.Base

    Used in Haskell's translation of [n,n'..] with [n,n'..] = enumFromThen n n', a possible implementation being enumFromThen n n' = n : n' : worker (f x) (f x n'), worker s v = v : worker s (s v), x = fromEnum n' - fromEnum n and

    f n y
    | n > 0 = f (n - 1) (succ y)
    | n < 0 = f (n + 1) (pred y)
    | otherwise = y
    
    

    Examples

    • enumFromThen 4 6 :: [Integer] = [4,6,8,10...]

    • enumFromThen 6 2 :: [Int] = [6,2,-2,-6,...,minBound ::
      Int]

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