using net.liftweb.json what is the difference \ and \ operators when parsing json ?
import net.liftweb.json._ val parsed = JsonParser.parse(jsonString) val name = parsed.\("firstName") val userId = parsed.\\("userId")
"\\" will extract the value even if it's present within nested json whereas "\" will extract the value only if present as a top-level attribute.
Consider this json
val json = """{"nested1":{"nested2": {"myKey":"myValue"}}}""" val jsonMsg = parse(json)
In this case
(jsonMsg \ "myKey").values
retruns None
where as
(jsonMsg \\ "myKey").values
returns myValue
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"\\" will extract the value even if it's present within nested json whereas "\" will extract the value only if present as a top-level attribute.
Consider this json
In this case
retruns None
where as
returns myValue