Hoogle Search

Within LTS Haskell 24.5 (ghc-9.10.2)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. (.<<.) :: Bits a => a -> Int -> a

   utility-ht	Data.Bits.HT

   Infix variant of shiftL. Precedence is chosen like multiplication since a .<<. k == a * 2^k.

2. (.>>.) :: Bits a => a -> Int -> a

   utility-ht	Data.Bits.HT

   Infix variant of shiftR. Precedence is chosen like division since a .>>. k == a / 2^k.

3. (.>) :: ReadS (b -> c) -> ReadS b -> ReadS c

   utility-ht	Text.Read.HT

   Compose two parsers sequentially.

4. type family (l1 :: [Type]) .++ (l2 :: [Type]) :: [Type]

   servant	Servant.API.TypeLevel.List

   Append two type-level lists. Import it as

   import Servant.API.TypeLevel.List (type (.++))
   

5. (.!=) :: Parser (Maybe a) -> a -> Parser a

   yaml	Data.Yaml

   Helper for use in combination with .:? to provide default values for optional JSON object fields. This combinator is most useful if the key and value can be absent from an object without affecting its validity and we know a default value to assign in that case. If the key and value are mandatory, use .: instead. Example usage:

   v1 <- o .:? "opt_field_with_dfl" .!= "default_val"
   v2 <- o .:  "mandatory_field"
   v3 <- o .:? "opt_field2"
   

6. (.:) :: FromJSON a => Object -> Key -> Parser a

   yaml	Data.Yaml

   Retrieve the value associated with the given key of an Object. The result is empty if the key is not present or the value cannot be converted to the desired type. This accessor is appropriate if the key and value must be present in an object for it to be valid. If the key and value are optional, use .:? instead.

7. (.:?) :: FromJSON a => Object -> Key -> Parser (Maybe a)

   yaml	Data.Yaml

   Retrieve the value associated with the given key of an Object. The result is Nothing if the key is not present or if its value is Null, or empty if the value cannot be converted to the desired type. This accessor is most useful if the key and value can be absent from an object without affecting its validity. If the key and value are mandatory, use .: instead.

8. (.=) :: (KeyValue e kv, ToJSON v) => Key -> v -> kv

   yaml	Data.Yaml

   No documentation available.

9. (.=) :: ToYaml a => Text -> a -> (Text, YamlBuilder)

   yaml	Data.Yaml.Builder

   No documentation available.

10. (.:) :: FromYaml a => [(Text, YamlValue)] -> Text -> YamlParser a

    yaml	Data.Yaml.Parser

    No documentation available.

Page 12 of many | Previous | Next