2011/11/9 John J Barton <[email protected]> > I'm sure this has been discussed before, but isn't is possible and > desirable to make |this| illegal in "using strict;" when it can be > determined from the AST alone that |this| will bind to |window|? eg: > > Object.keys(foo).forEach(function(key) { > // this is undefined-> window > }); > > This case kind of case is because, as others have noted, incorrect > |this| binding most often occurs in two cases: 1) mixed OO and > functional programming (as above) and 2) callback defn. > > In `strict-mode', |this| would resolve to `undefined' inside that function anyways. I'm not a fan of making constructs "illegal" just because their semantics might be confusing, even more so when such disallowance would vary highly in context. It would be bound to make things more confusing, imho.
Block lambdas are the best solution I can see right now.
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