Music.Theory.DB.JSON

JSON string association database. JSON objects do no allow multiple keys. Here multiple keys are read & written as arrays.

Documentation

db_load_utf8 :: FilePath -> IO DB'

Load DB from FilePath.

db_store_utf8 :: FilePath -> DB' -> IO ()

Store DB to FilePath.

let fn = "/home/rohan/ut/www-spr/data/db.js"
db <- db_load_utf8 fn
length db == 1334
db_store_utf8 "/tmp/sp.js" db

Maybe List of String

data Maybe_List_Of_String

Constructors

S String

L [String]

Instances

Eq Maybe_List_Of_String

Methods

(==) :: Maybe_List_Of_String -> Maybe_List_Of_String -> Bool

(/=) :: Maybe_List_Of_String -> Maybe_List_Of_String -> Bool

Show Maybe_List_Of_String

Methods

showsPrec :: Int -> Maybe_List_Of_String -> ShowS

show :: Maybe_List_Of_String -> String

showList :: [Maybe_List_Of_String] -> ShowS

FromJSON Maybe_List_Of_String

Methods

parseJSON :: Value -> Parser Maybe_List_Of_String

parseJSONList :: Value -> Parser [Maybe_List_Of_String]

ToJSON Maybe_List_Of_String

Methods

toJSON :: Maybe_List_Of_String -> Value

toEncoding :: Maybe_List_Of_String -> Encoding

toJSONList :: [Maybe_List_Of_String] -> Value

toEncodingList :: [Maybe_List_Of_String] -> Encoding

maybe_list_to_list :: Maybe_List_Of_String -> [String]

list_to_maybe_list :: [String] -> Maybe_List_Of_String