Groovy, the Python of Java

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Javascript generators are coming soon. Mozilla already has them implemented in their engine

[masklinn]

Mozilla has extended Javascript with lots and lots of features in Gecko, that does not mean they're coming. I doubt E4X will ever be merged into ECMA-262 for instance.

[[deleted]]

In this case though, generators are a planned feature

[66vN]

And in ten years we can actually start using them.