Data.String.Like

Documentation

class StringLike a where

This type class can be used to transform any string like from lazy Text, there is no default implementation for String consciously, beacause we don't want to incite String using.

Methods

fromLazyText :: Text -> a

Instances

StringLike ByteString

StringLike ByteString

StringLike Text

StringLike Text

class ToString a where

This type class can be used to transform any type to StringLike type. Minimal complete definition: toText.

Methods

toText :: a -> Text

Instances

ToString Double

ToString Float

ToString Int

ToString Int8

ToString Int16

ToString Int32

ToString Int64

ToString Integer

ToString Word

ToString Word8

ToString Word16

ToString Word32

ToString Word64

ToString String

ToString ByteString

ToString ByteString

ToString Text

ToString Text

string :: (ToString a, StringLike b) => a -> b

Transform any ToString type to any StringLike type, it can be inferred or should be explicitly defined.

text :: ToString a => a -> Text

Transform any ToString type to strict Text

ltext :: ToString a => a -> Text

Transform any ToString type to lazy Text

bs :: ToString a => a -> ByteString

Transform any ToString type to strict ByteString

lbs :: ToString a => a -> ByteString

Transform any ToString type to lazy ByteString

readFile :: FilePath -> IO String

The readFile function reads a file and returns the contents of the file as a string. The file is read lazily, on demand, as with getContents.

writeFile :: FilePath -> String -> IO ()

The computation writeFile file str function writes the string str, to the file file.

appendFile :: FilePath -> String -> IO ()

The computation appendFile file str function appends the string str, to the file file.

Note that writeFile and appendFile write a literal string to a file. To write a value of any printable type, as with print, use the show function to convert the value to a string first.

 main = appendFile "squares" (show [(x,x*x) | x <- [0,0.1..2]])