[elehack]

Nice to see something actually trying a CLOS-style object system. There are good ideas in there that don't get enough presence in more recent language efforts.

[nickik]

Look at Dylan, stuff started happening again.

http://opendylan.org/

[nponeccop]

I wonder what happened to SELF-like object systems (slots, prototypes and all that).

[fanf2]

JavaScript

[nponeccop]

I mean high-performance implementations. Techniques to (statically) compile prototypes into efficient code were developed, but they are largely irrelevant to Javascript. High-performance modern implementations of JS rely on tracing JIT.

[cyrus_]

Pretty sure polymorphic inline caches are standard fare in both Javascript and other VMs (JVM, CLR, etc.). What other techniques are you referring to?