System.Console.HSProcess.Representable

Documentation

class Show a => Row a where

A Row is something that can be expressed as a line. The output of repr' should be formatted such that it can be read and processed from the command line.

For example:

>>> IO.putStrLn $ show [1,2,3,4]
[1,2,3,4]

>>> Data.ByteString.Lazy.Char8.putStrLn $ repr' [1,2,3,4]
1 2 3 4

Methods

repr' :: a -> ByteString

Instances

Row Bool

Row Char

Row Double

Row Float

Row Int

Row Integer

Row ()

Row ByteString

ListAsRow a => Row [a]

Row a => Row (Maybe a)

ListAsRow a => Row (Set a)

(Row a, Row b) => Row (a, b)

(Row a, Row b) => Row (Map a b)

(Row a, Row b, Row c) => Row (a, b, c)

class Show a => Rows a where

A type that instantiate Rows is a type that can be represented as a list of rows, where typically a row is a line.

For example:

>>> mapM_ Data.ByteString.Lazy.Char8.putStrLn $ repr [1,2,3,4]
1
2
3
4

Methods

repr :: a -> [ByteString]

Instances

Rows Bool

Rows Char

Rows Double

Rows Float

Rows Int

Rows Integer

Rows ()

Rows ByteString

ListAsRows a => Rows [a]

Rows a => Rows (Maybe a)

ListAsRows a => Rows (Set a)

(Row a, Row b) => Rows (a, b)

(Row a, Row b) => Rows (Map a b)

printRows :: forall a. Rows a => Bool -> a -> IO ()

printRow :: forall a. Row a => Bool -> a -> IO ()