Lambda function syntax in JavaScript without curly braces

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This isn’t part of a standard. The documentation is at https://developer.mozilla.org/en/New_in_JavaScript_1.8#Expression_closures_%28Merge_into_own_page.2fsection%29

There’s discussion about adding some syntax along these lines or even shorter to the standard. See http://wiki.ecmascript.org/doku.php?id=strawman:shorter_function_syntax

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