Network.HTTP.Types.QueryLike

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

(QueryKeyLike k, QueryValueLike v) => QueryLike [(k, v)]

(QueryKeyLike k, QueryValueLike v) => QueryLike [Maybe (k, v)]

class QueryKeyLike a where

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

Methods

toQueryKey :: a -> ByteString

Instances

QueryKeyLike Text

QueryKeyLike ByteString

QueryKeyLike ByteString

QueryKeyLike [Char]

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

QueryValueLike Text

QueryValueLike ByteString

QueryValueLike ByteString

QueryValueLike [Char]

QueryValueLike a => QueryValueLike (Maybe a)