Created
December 5, 2015 20:27
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| -- from purescript-argonaut https://github.com/purescript-contrib/purescript-argonaut-codecs/blob/master/src/Data/Argonaut/Combinators.purs#L34-L35 | |
| -- obj .? "foo" | |
| (.?) :: forall a. (DecodeJson a) => JObject -> String -> Either String a | |
| (.?) o s = maybe (Left $ "Expected field " ++ show s) decodeJson (M.lookup s o) | |
| -- I would like to do something like | |
| -- obj `at` ["foo", "bar"] | |
| at :: forall a. (DecodeJson a) => JObject -> Array String -> Either String a | |
| at obj fields = fold (.?) obj (reverse fields) | |
| -- but this errors with: | |
| -- Could not match type | |
| -- | |
| -- StrMap Json | |
| -- | |
| -- with type | |
| -- | |
| -- String |
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