| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Data.Csv
Description
csv data type
Synopsis
- data CsvConfig = CsvConfig {}
- defaultCsvConfig :: CsvConfig
- file :: CsvConfig -> FilePath
- data Header
- fileLines :: Handle -> Emitter IO Text
- rowEmitter :: CsvConfig -> (Char -> Parser a) -> Cont IO (Emitter IO (Either Text a))
- runCsv :: CsvConfig -> (Char -> Parser a) -> IO [Either Text a]
- sep :: Char -> Parser ()
- field :: Char -> Parser Text
- skipField :: Char -> Parser ()
- texts :: Char -> Parser [Text]
- scis :: Char -> Parser [Scientific]
- doubles :: Char -> Parser [Double]
- ints :: Char -> Parser [Int]
Documentation
Constructors
| CsvConfig | |
Instances
| Eq CsvConfig Source # | |
| Show CsvConfig Source # | |
| Generic CsvConfig Source # | |
| type Rep CsvConfig Source # | |
Defined in Data.Csv type Rep CsvConfig = D1 (MetaData "CsvConfig" "Data.Csv" "online-csv-0.0.1-FUYOO70iiCX2XuVfcsh67y" False) (C1 (MetaCons "CsvConfig" PrefixI True) ((S1 (MetaSel (Just "name") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Text) :*: S1 (MetaSel (Just "suffix") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Text)) :*: (S1 (MetaSel (Just "dir") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Text) :*: (S1 (MetaSel (Just "csep") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Char) :*: S1 (MetaSel (Just "header") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Header))))) | |
defaultCsvConfig :: CsvConfig Source #
CsvConfig Hill_Valley_with_noise ".csv" "./other" '\t' HasHeader
does the csv have a header row?
rowEmitter :: CsvConfig -> (Char -> Parser a) -> Cont IO (Emitter IO (Either Text a)) Source #
emits parsed csv rows
runCsv :: CsvConfig -> (Char -> Parser a) -> IO [Either Text a] Source #
Run a parser across all lines of a file.
>>>xss <- rights <$> runCsv defaultCsvConfig doubles
>>>length xss1212
>>>all ((==101) . length) xssTrue
>>>take 2 xss[[39.02,36.49,38.2,38.85,39.38,39.74,37.02,39.53,38.81,38.79,37.65,39.34,38.55,39.03,37.21,36.32,37.81,38.95,36.7,39.72,37.06,37.29,36.43,36.53,36.19,38.17,37.3,36.15,36.68,36.7,36.68,36.99,38.92,37.25,37.47,36.32,35.75,35.68,34.66,34.26,35.62,36.6,34.78,34.67,34.3,33.4,31.4,31.75,31.75,32.84,33.76,35.74,34.01,33.91,36.88,34.41,35.52,36.94,36.95,35.57,38.02,37.32,39.05,37.97,37.01,38.98,38.83,38.87,38.03,38.4,38.25,38.61,36.23,37.81,37.98,38.58,38.96,38.97,39.08,38.79,38.79,36.31,36.59,38.19,37.95,39.63,39.27,37.19,37.13,37.47,37.57,36.62,36.92,38.8,38.52,38.07,36.73,39.46,37.5,39.1,0.0],[1.83,1.71,1.77,1.77,1.68,1.78,1.8,1.7,1.75,1.78,1.86,1.76,1.81,1.86,1.74,1.78,1.81,2.02,2.0,2.01,2.0,2.06,2.0,1.93,1.88,1.85,1.89,1.83,1.76,1.83,1.81,1.81,1.78,1.85,1.86,1.73,1.79,1.81,1.85,1.71,1.71,1.71,1.84,1.76,1.73,1.83,1.68,1.73,1.76,1.77,1.72,1.75,1.66,1.76,1.77,1.78,1.63,1.72,1.66,1.67,1.74,1.65,1.74,1.79,1.69,1.76,1.74,1.82,1.78,1.65,1.65,1.82,1.71,1.83,1.72,1.63,1.77,1.69,1.81,1.74,1.7,1.72,1.74,1.72,1.74,1.71,1.7,1.83,1.79,1.78,1.71,1.8,1.79,1.77,1.74,1.74,1.8,1.78,1.75,1.69,1.0]]
sep :: Char -> Parser () Source #
Most parsing and building routines implicity assume comma separated, and newlines separating rows.
>>>A.parse (sep ',') ",ok"Done "ok" ()
field :: Char -> Parser Text Source #
an unquoted field Does not consume the separator token >>> A.parse (field ',') "field,ok" Done ",ok" "field"
skipField :: Char -> Parser () Source #
skipping a field >>> A.parse (skipField ',') "field,ok" Done ",ok" ()
texts :: Char -> Parser [Text] Source #
parser for a csv row of [Text] >>> A.parseOnly (texts ',') "field1,field2" Right ["field1","field2"]
scis :: Char -> Parser [Scientific] Source #
parser for a csv row of [Scientific] >>> A.parseOnly (scis ',') "1,2.2,3.3" Right [1.0,2.2,3.3]