text-short

Memory-efficient representation of Unicode text strings

Version on this page:0.1.2
LTS Haskell 12.22:0.1.2
Stackage Nightly 2018-12-15:0.1.2
Latest on Hackage:0.1.2

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BSD3 licensed by Herbert Valerio Riedel
Maintained by hvr@gnu.org

Module documentation for 0.1.2

There are no documented modules for this package.

This package provides the ShortText type which is suitable for keeping many short strings in memory. This is similiar to how ShortByteString relates to ByteString.

The main difference between Text and ShortText is that ShortText uses UTF-8 instead of UTF-16 internally and also doesn't support zero-copy slicing (thereby saving 2 words). Consequently, the memory footprint of a (boxed) ShortText value is 4 words (2 words when unboxed) plus the length of the UTF-8 encoded payload.

Changes

0.1.2

  • Add IsList ShortText and PrintfArg ShortText instances

  • Expose partial functions via new Data.Text.Short.Partial module

    foldl1 :: (Char -> Char -> Char) -> ShortText -> Char
    foldl1' :: (Char -> Char -> Char) -> ShortText -> Char
    foldr1 :: (Char -> Char -> Char) -> ShortText -> Char
    head :: ShortText -> Char
    index :: ShortText -> Int -> Char
    init :: ShortText -> ShortText
    last :: ShortText -> Char
    tail :: ShortText -> ShortText
    
  • Add several Data.Text verbs to Data.Text.Short API

    (!?) :: ShortText -> Int -> Maybe Char
    all :: (Char -> Bool) -> ShortText -> Bool
    any :: (Char -> Bool) -> ShortText -> Bool
    append :: ShortText -> ShortText -> ShortText
    break :: (Char -> Bool) -> ShortText -> (ShortText, ShortText)
    breakEnd :: (Char -> Bool) -> ShortText -> (ShortText, ShortText)
    concat :: [ShortText] -> ShortText
    cons :: Char -> ShortText -> ShortText
    drop :: Int -> ShortText -> ShortText
    dropAround :: (Char -> Bool) -> ShortText -> ShortText
    dropEnd :: Int -> ShortText -> ShortText
    dropWhile :: (Char -> Bool) -> ShortText -> ShortText
    dropWhileEnd :: (Char -> Bool) -> ShortText -> ShortText
    empty :: ShortText
    filter :: (Char -> Bool) -> ShortText -> ShortText
    find :: (Char -> Bool) -> ShortText -> Maybe Char
    findIndex :: (Char -> Bool) -> ShortText -> Maybe Int
    foldl :: (a -> Char -> a) -> a -> ShortText -> a
    foldl' :: (a -> Char -> a) -> a -> ShortText -> a
    foldr :: (Char -> a -> a) -> a -> ShortText -> a
    indexEndMaybe :: ShortText -> Int -> Maybe Char
    indexMaybe :: ShortText -> Int -> Maybe Char
    intercalate :: ShortText -> [ShortText] -> ShortText
    intersperse :: Char -> ShortText -> ShortText
    isPrefixOf :: ShortText -> ShortText -> Bool
    isSuffixOf :: ShortText -> ShortText -> Bool
    pack :: [Char] -> ShortText
    replicate :: Int -> ShortText -> ShortText
    reverse :: ShortText -> ShortText
    singleton :: Char -> ShortText
    snoc :: ShortText -> Char -> ShortText
    span :: (Char -> Bool) -> ShortText -> (ShortText, ShortText)
    spanEnd :: (Char -> Bool) -> ShortText -> (ShortText, ShortText)
    splitAt :: Int -> ShortText -> (ShortText, ShortText)
    splitAtEnd :: Int -> ShortText -> (ShortText, ShortText)
    stripPrefix :: ShortText -> ShortText -> Maybe ShortText
    stripSuffix :: ShortText -> ShortText -> Maybe ShortText
    take :: Int -> ShortText -> ShortText
    takeEnd :: Int -> ShortText -> ShortText
    takeWhile :: (Char -> Bool) -> ShortText -> ShortText
    takeWhileEnd :: (Char -> Bool) -> ShortText -> ShortText
    uncons :: ShortText -> Maybe (Char, ShortText)
    unpack :: ShortText -> [Char]
    unsnoc :: ShortText -> Maybe (ShortText, Char)
    
  • Optimise low-level primitives

  • Add support for GHC 8.4

0.1.1

  • Expose unsafe conversion API via Data.Text.Short.Unsafe module
  • Minor documentation improvement

0.1

  • First version. Released on an unsuspecting world.
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