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ECMAScript Edition 4 and Backwards CompatibilityThere's a new document on the incompatibilities between ECMAScript Edition 3 and the proposed Edition 4. Given the recent controversy in the blogosphere and the degree of interest in last week's discussion of the proposed ES4, this document may be of interest to LtUers. It's also interesting to think of conservative extension not as an all-or-nothing property, but to judge incompatibilities in terms of their impact. This document attempts to enumerate and classify the different ways the proposed ES4 spec conflicts with the specification of ES3. (One last note: there's a new pre-release of the reference implementation available, with binaries for all major platforms. Check it out!) |
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