Data.Verbosity

Simple enum that encodes application Verbosity.

Documentation

data Verbosity

Ordering:

Silent < Normal < Verbose < Annoying

Bounds:

minBound = Silent; maxBound = Annoying

Enum:

map fromEnum [Silent .. Annoying] = [0, 1, 2, 3]

Constructors

Silent

Don't print any messages.

Normal

Print only important messages. (default)

Verbose

Print anything that comes in to mind.

Annoying

Print debugging/tracing information.

Instances

Bounded Verbosity

Enum Verbosity

Eq Verbosity

Data Verbosity

Ord Verbosity

Read Verbosity

Show Verbosity

Generic Verbosity

Binary Verbosity

Encoded as one byte in range [minBound .. maxBound :: Verbosity].

Default Verbosity

def = Normal

NFData Verbosity

HasVerbosity Verbosity

Typeable * Verbosity

type Rep Verbosity

fromInt :: Int -> Maybe Verbosity

Safe version of toEnum specialized to Verbosity.

parse :: (Eq string, IsString string) => string -> Maybe Verbosity

Generic Verbosity parsing function.

Use case-insensitive package to make this function case insensitive:

ghci> import Data.Verbosity as Verbosity
ghci> import qualified Data.CaseInsensitive as CI (mk)
ghci> Verbosity.parse (CI.mk "silent")
Just Silent