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.:? ) :: FromJSON a => Object -> Key -> Parser (Maybe a)yaml Data.Yaml.TH 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.
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/: ) :: MediaType -> (ByteString, ByteString) -> MediaTypehttp-media Network.HTTP.Media Adds a parameter to a MediaType. Can produce an error if either string is invalid.
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/: ) :: MediaType -> (ByteString, ByteString) -> MediaTypehttp-media Network.HTTP.Media.MediaType Adds a parameter to a MediaType. Can produce an error if either string is invalid.
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.: ) :: FromJSON a => Object -> Key -> Parser ayesod-core Yesod.Core.Json 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.
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>:> ) :: Addr a => AddrRange a -> AddrRange a -> Booliproute Data.IP The >:> operator takes two AddrRange. It returns True if the first AddrRange contains the second AddrRange. Otherwise, it returns False.
>>> makeAddrRange ("127.0.2.1" :: IPv4) 8 >:> makeAddrRange "127.0.2.1" 24 True >>> makeAddrRange ("127.0.2.1" :: IPv4) 24 >:> makeAddrRange "127.0.2.1" 8 False >>> makeAddrRange ("2001:DB8::1" :: IPv6) 16 >:> makeAddrRange "2001:DB8::1" 32 True >>> makeAddrRange ("2001:DB8::1" :: IPv6) 32 >:> makeAddrRange "2001:DB8::1" 16 False-
non-empty Data.NonEmpty No documentation available.
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non-empty Data.Optional No documentation available.
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.: ) :: FromField a => NamedRecord -> ByteString -> Parser acassava Data.Csv Alias for lookup.
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%: ) :: forall (m :: Type -> Type) r a . Monad m => T r a -> (a -> a) -> StateT r m ()data-accessor Data.Accessor Infix variant of modify.
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=: ) :: forall (m :: Type -> Type) r a . Monad m => Accessor r a -> a -> StateT r m ()data-accessor Data.Accessor Deprecated: use (Data.Accessor.Monad.Trans.State.%=) from data-accessor-transformers package