Brendan Eich wrote: > This past April at the ES4 WG meeting we decided to make let equate to > var at top level within a function body or program.
That's good news. > Another thing we do that's a bit harsh is to call repeated let x; > declarations in the same explicit block an error. This is good for big projects that need discipline and organization, /if/ the compiler throws an error on undeclared variables. But as I've mentioned elsewhere, I see important drawbacks in the opposite cases. I think it would be a good idea to consider varying this between subset cautious and subset reckless. (Well it needs a name, doesn't it?) > On Aug 22, 2008, at 7:26 AM, Ingvar von Schoultz wrote: >> In my opinion this is not a useful feature, quite the contrary. >> If the variables are far apart on the page, the disappearance of >> one of them will be mysterious and difficult to debug. > > It's also a pain to implement in few passes at top level, if one prefers > to parse a top-level statement at a time and recycle the AST after > generating code. I'm surprised, I thought making synonyms would be easy. -- Ingvar von Schoultz _______________________________________________ Es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
