I found this explanation from Brian Goetz: http://openjdk.5641.n7.nabble.com/Warning-about-single-underscore-identifier-td145974.html
"Yes, we are "reclaiming" the syntactic real estate of "_" from the space of identifiers for use in future language features. However, because there are existing programs that might use it, it is a warning for identifiers that occur in existing syntactic positions for 8, and an error for lambda formals (since there is no existing code with lambdas.) Your suspicion is mostly right, except that we are certainly NOT going to do Scala's "wunderbar". However, things it might be used for include things like "I don't want to give this variable a name" (such as catch parameters that are never used.)" Emmanuel Bourg --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@commons.apache.org For additional commands, e-mail: dev-h...@commons.apache.org
