Safe Haskell	Safe-Inferred
Language	Haskell98

Network.HTTP.Types.QueryLike

Synopsis

class QueryLike a where
- toQuery :: a -> Query
class QueryKeyLike a where
- toQueryKey :: a -> ByteString
class QueryValueLike a where
- toQueryValue :: a -> Maybe ByteString

Documentation

class QueryLike a where #

Types which can, and commonly are, converted to Query are in this class.

You can use lists of simple key value pairs, with ByteString (strict, or lazy: ByteString), Text, or String as the key/value types. You can also have the value type lifted into a Maybe to support keys without values; and finally it is possible to put each pair into a Maybe for key-value pairs that aren't always present.

Methods

toQuery :: a -> Query #

Convert to Query.

Instances

Instances details

(QueryKeyLike k, QueryValueLike v) => QueryLike [Maybe (k, v)] #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQuery :: [Maybe (k, v)] -> Query #
(QueryKeyLike k, QueryValueLike v) => QueryLike [(k, v)] #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQuery :: [(k, v)] -> Query #

class QueryKeyLike a where #

Types which, in a Query-like key-value list, are used in the Key position.

Methods

toQueryKey :: a -> ByteString #

Instances

Instances details

QueryKeyLike ByteString #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryKey :: ByteString -> ByteString0 #
QueryKeyLike ByteString #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryKey :: ByteString -> ByteString #
QueryKeyLike Text #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryKey :: Text -> ByteString #
QueryKeyLike [Char] #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryKey :: [Char] -> ByteString #

class QueryValueLike a where #

Types which, in a Query-like key-value list, are used in the Value position.

Methods

toQueryValue :: a -> Maybe ByteString #

Instances

Instances details

QueryValueLike ByteString #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryValue :: ByteString -> Maybe ByteString0 #
QueryValueLike ByteString #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryValue :: ByteString -> Maybe ByteString #
QueryValueLike Text #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryValue :: Text -> Maybe ByteString #
QueryValueLike [Char] #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryValue :: [Char] -> Maybe ByteString #
QueryValueLike a => QueryValueLike (Maybe a) #
Instance details Defined in Network.HTTP.Types.QueryLike Methods toQueryValue :: Maybe a -> Maybe ByteString #