| Safe Haskell | None |
|---|---|
| Language | Haskell98 |
Network.HTTP.Types.QueryLike
- class QueryLike a where
- 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.
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
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