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1. allEqual :: Eq a => [a] -> Bool

   utility-ht	Data.List.HT

   >>> allEqual "aab"
   False
   
   >>> allEqual "aaa"
   True
   
   >>> allEqual "aa"
   True
   
   >>> allEqual "a"
   True
   
   >>> allEqual ""
   True
   

2. lessOrEqualLength :: [a] -> [b] -> Bool

   utility-ht	Data.List.Match

   lessOrEqualLength x y is almost the same as compareLength x y <= EQ, but

   >>> lessOrEqualLength "" undefined
   True
   

   whereas compareLength [] undefined <= EQ = undefined.

3. sequenceBia :: (Traversable t, Biapplicative p) => t (p b c) -> p (t b) (t c)

   bifunctors	Data.Biapplicative

   Perform all the Biapplicative actions in a Traversable container and produce a container with all the results.

   sequenceBia = traverseBia id
   

4. makeBisequence :: Name -> Q Exp

   bifunctors	Data.Bifunctor.TH

   Generates a lambda expression which behaves like bisequence (without requiring a Bitraversable instance).

5. makeBisequenceA :: Name -> Q Exp

   bifunctors	Data.Bifunctor.TH

   Generates a lambda expression which behaves like bisequenceA (without requiring a Bitraversable instance).

6. makeBisequenceAOptions :: Options -> Name -> Q Exp

   bifunctors	Data.Bifunctor.TH

   Like makeBitraverseA, but takes an Options argument.

7. makeBisequenceOptions :: Options -> Name -> Q Exp

   bifunctors	Data.Bifunctor.TH

   Like makeBisequence, but takes an Options argument.

8. data Required

   servant	Servant.API

   Required argument. Not wrapped.

9. parseQueryParam :: FromHttpApiData a => Text -> Either Text a

   servant	Servant.API

   Parse query param value.

10. type FoldRequired (mods :: [Type]) = FoldRequired' 'False mods

    servant	Servant.API.Modifiers

    Fold modifier list to decide whether argument is required.

    >>> :kind! FoldRequired '[Required, Description "something"]
    FoldRequired '[Required, Description "something"] :: Bool
    = 'True
    

    >>> :kind! FoldRequired '[Required, Optional]
    FoldRequired '[Required, Optional] :: Bool
    = 'False
    

    >>> :kind! FoldRequired '[]
    FoldRequired '[] :: Bool
    = 'False
    

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