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Within LTS Haskell 24.65 (ghc-9.10.3)

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Exact lookup

1. lookupAttributeMap :: ClassAttributeMap -> Map CompressedWord U32 -> CompressedWord -> BitGet (Map U32 U32)

   rattletrap	Rattletrap.Type.Attribute

   No documentation available.

2. lookupAttributeName :: ClassAttributeMap -> Map U32 U32 -> CompressedWord -> BitGet Str

   rattletrap	Rattletrap.Type.Attribute

   No documentation available.

3. lookupL :: Ord l => l -> Bimap l r -> Maybe r

   rattletrap	Rattletrap.Type.ClassAttributeMap

   No documentation available.

4. lookupR :: Ord r => r -> Bimap l r -> Maybe l

   rattletrap	Rattletrap.Type.ClassAttributeMap

   No documentation available.

5. lookupClassName :: Str -> BitGet Str

   rattletrap	Rattletrap.Type.Replication.Spawned

   No documentation available.

6. lookupName :: ClassAttributeMap -> Maybe U32 -> BitGet (Maybe Str)

   rattletrap	Rattletrap.Type.Replication.Spawned

   No documentation available.

7. lookupObjectName :: ClassAttributeMap -> U32 -> BitGet Str

   rattletrap	Rattletrap.Type.Replication.Spawned

   No documentation available.

8. lookupEnv :: (IsString a, MonadIO m) => String -> m (Maybe a)

   read-env-var	System.ReadEnvVar

   Like System.Environment's lookupEnv, but using IsString to make it more general. Lookup an environment variable that exists:

   >>> setEnv "TEST_ENV_VAR" "foo"
   
   >>> lookupEnv "TEST_ENV_VAR" :: IO (Maybe String)
   Just "foo"
   

   Lookup an environment variable that doesn't exist. Return Nothing:

   >>> lookupEnv "THIS_ENV_VAR_WILL_NOT_EXIST" :: IO (Maybe String)
   Nothing
   

9. lookupEnvDef :: (IsString a, MonadIO m) => String -> a -> m a

   read-env-var	System.ReadEnvVar

   Like lookupEnv but take a default value. Lookup an environment variable that exists:

   >>> setEnv "TEST_ENV_VAR" "foo"
   
   >>> lookupEnvDef "TEST_ENV_VAR" "bar" :: IO String
   "foo"
   

   Lookup an environment variable that doesn't exist. Return the default value:

   >>> lookupEnvDef "THIS_ENV_VAR_WILL_NOT_EXIST" "bar" :: IO String
   "bar"
   

10. lookupEnvEx :: (IsString a, MonadIO m, MonadThrow m) => String -> m a

    read-env-var	System.ReadEnvVar

    Like lookupEnv, but instead of returning a Maybe, throw an EnvVarDoesNotExistException if the environment variable does not exist. The exception is thrown with throwM from MonadThrow. Lookup an environment variable that exists:

    >>> setEnv "TEST_ENV_VAR" "foo"
    
    >>> lookupEnvEx "TEST_ENV_VAR" :: IO String
    "foo"
    

    Lookup an environment variable that doesn't exist. Throws EnvVarDoesNotExistException.

    >>> lookupEnvEx "THIS_ENV_VAR_WILL_NOT_EXIST" :: IO String
    *** Exception: EnvVarDoesNotExistException "THIS_ENV_VAR_WILL_NOT_EXIST"
    

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