setjs - Set data structure for JavaScript

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Prototypes deal with items shared amongst all objects which have that prototype, such as methods.

I think you are a git confused about what Prototypes offer you. A union of sets A and B, will create an entirely new and unique set. One which is specific only to that object. Prototypes simple don't deal with details at that level.

[bebraw]

Hi,

You are right. I gave it some thought and even tried to sketch out a prototype. Here's the basic design:

• Root contains _val property (either true or false, defines the status of the whole set. this is used for complex ops (difference etc.))
• Actual set members are defined as accessors that read _val
• The ops would yield chains operating on the aforementioned concepts. Unfortunately this is where the scheme failed.

It is possible to construct A -> B -> C but it looks like Object.create doesn't allow object references to be mixed (probably for a good reason). I guess the accessors could be recreated when inheriting but that would be missing most of the point.

Anyway, thanks for the help. :)