JSON.Basic.Response

Documentation

data Meta

Constructors

Meta

Fields

h_type :: Text

h_id :: [Char]

Instances

Show Meta

Generic Meta

ToJSON Meta

FromJSON Meta

type Rep Meta

data Message

Constructors

Message

Fields

h_meta :: Meta

Instances

Show Message

Generic Message

ToJSON Message

FromJSON Message

type Rep Message

encode :: ToJSON a => a -> ByteString

Efficiently serialize a JSON value as a lazy ByteString.

decode :: FromJSON a => ByteString -> Maybe a

Efficiently deserialize a JSON value from a lazy ByteString. If this fails due to incomplete or invalid input, Nothing is returned.

The input must consist solely of a JSON document, with no trailing data except for whitespace. This restriction is necessary to ensure that if data is being lazily read from a file handle, the file handle will be closed in a timely fashion once the document has been parsed.

This function parses immediately, but defers conversion. See json for details.

eitherDecode :: FromJSON a => ByteString -> Either String a

Like decode but returns an error message when decoding fails.