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Within LTS Haskell 24.32 (ghc-9.10.3)

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

    Agda Agda.Interaction.JSON

    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.

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

    Agda Agda.Interaction.JSON

    Retrieve the value associated with the given key of an Object. If the key is not present or the field is null and the omittedField is Just x for some x, the result will be that x.

  3. (-:>) :: b -> SF a b -> SF a b

    Yampa FRP.Yampa

    Output pre-insert operator. Insert a sample in the output, and from that point on, behave like the given sf.

  4. (-:>) :: b -> SF a b -> SF a b

    Yampa FRP.Yampa.Basic

    Output pre-insert operator. Insert a sample in the output, and from that point on, behave like the given sf.

  5. (...:) :: FromJSON a => Object -> [Text] -> WarningParser a

    aeson-warning-parser Data.Aeson.WarningParser

    Synonym version of ..:.

  6. (...:?) :: FromJSON a => Object -> [Text] -> WarningParser (Maybe a)

    aeson-warning-parser Data.Aeson.WarningParser

    Synonym version of ..:?.

  7. (..:) :: FromJSON a => Object -> Text -> WarningParser a

    aeson-warning-parser Data.Aeson.WarningParser

    WarningParser version of .:.

  8. (..:?) :: FromJSON a => Object -> Text -> WarningParser (Maybe a)

    aeson-warning-parser Data.Aeson.WarningParser

    WarningParser version of .:?.

  9. (.:) :: FromJSON a => Object -> Text -> Parser a

    aeson-warning-parser Data.Aeson.WarningParser

    Extends the .: warning to include the field name that failed to parse.

  10. (.:?) :: FromJSON a => Object -> Text -> Parser (Maybe a)

    aeson-warning-parser Data.Aeson.WarningParser

    Extends the .:? warning to include the field name that failed to parse.

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