2013/5/21 Brendan Eich <[email protected]> > David Bruant wrote: > >> This description ("arbitrary string keys", "bidirectional link with style >> rule") suggests that you want a proxy (canonical values are in the style >> rule, the proxy is just a façade with a bit of validation/coercion logic). >> That's the sort of use case they've been introduced for. >> > > I don't see why a proxy is required if the API is get/set/has (like > Map's). We're not making properties appear without knowing their names, so > this is not a proxy use-case on its face. >
My 2c: I agree, don't express this as a proxy. You want a simple key-value mapping. Expressing that as a proxy drags in lots of unnecessary aspects of JS's object model (e.g. prototypes, property attributes, etc.) You don't want/need to do that for this abstraction. Cheers, Tom
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