On Sat, Jun 11, 2011 at 9:36 PM, C. Scott Ananian <csc...@laptop.org> wrote:
> This is discussed in the paper(s). Closed/open types can be > considered part of the type system, in which case they are perfectly > compatible with plugins. If you make it an explicit part of the type system, I could see that working, but it's also an extra concept for developers to struggle with. I've tried a few language designs with open functions and data types, but ended up rejecting the technique to improve composition. Open/closed *analysis* is not such an easy task in an open system. Anyhow, I agree that there are plenty of optimizations available. But I don't believe we can replace a true/false/nil method invocation with a specialized bytecode in a typical open system.
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