Letâs use Ruby 1.9.2 and Psych to build an event based twitter stream parser. Psych is a YAML parser that I wrote and is in the standard library in 1.9.2. Eventually, it will replace the current YAML parser, but we can still use it today! But you said YAML and JSON! wtf? I know! In the YAML 1.2 spec, JSON is a subset of YAML. Psych supports YAML 1.1 right now, so *much* (but not all) JSON is suppo
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