Portability	GHC
Stability	experimental
Maintainer	bos@serpentine.com, rtharper@aftereternity.co.uk, duncan@haskell.org

Data.Text.Lazy.Fusion

Description

Core stream fusion functionality for text.

Synopsis

Documentation

stream :: Text -> Stream Char Source

O(n) Convert a Text into a 'Stream Char'.

unstream :: Stream Char -> Text Source

O(n) Convert a 'Stream Char' into a Text, using defaultChunkSize.

unstreamChunks :: Int -> Stream Char -> Text Source

O(n) Convert a 'Stream Char' into a Text, using the given chunk size.

length :: Stream Char -> Int64 Source

O(n) Returns the number of characters in a text.

unfoldrN :: Int64 -> (a -> Maybe (Char, a)) -> a -> Stream Char Source

O(n) Like unfoldr, unfoldrN64 builds a stream from a seed value. However, the length of the result is limited by the first argument to unfoldrN64. This function is more efficient than unfoldr when the length of the result is known.

index :: Stream Char -> Int64 -> Char Source

O(n) stream index (subscript) operator, starting from 0.

findIndex :: (Char -> Bool) -> Stream Char -> Maybe Int64 Source

The findIndex function takes a predicate and a stream and returns the index of the first element in the stream satisfying the predicate.

findIndices :: (Char -> Bool) -> Stream Char -> [Int64]Source

The findIndices function takes a predicate and a stream and returns all indices of the elements in the stream satisfying the predicate.

elemIndex :: Char -> Stream Char -> Maybe Int64 Source

O(n) The elemIndex function returns the index of the first element in the given stream which is equal to the query element, or Nothing if there is no such element.

elemIndices :: Char -> Stream Char -> [Int64]Source

O(n) The elemIndices function returns the index of every element in the given stream which is equal to the query element.

count :: Char -> Stream Char -> Int64 Source

O(n) The count function returns the number of times the query element appears in the given stream.