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Did you know that there is a new Java compiler that can do the first Futamura projection? https://github.com/graalvm/graal/tree/master/compiler

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Graal and Truffle are cool. It's unfortunate that it's in Java, mostly because I don't trust Oracle to do the right thing with the community and I expect them to change licenses to make business opportunities for Substrate VM licensing.

Isn't Oracle giving leadership of Java over to the open source community (i.e. to Apache or Elcipse )

As such, what's concerns still exist?

http://www.infoworld.com/article/3217347/java/oracle-doesnt-...

Even without SubstrateVM, Graal is a big step forward IMO in terms of interop and performance for the JVM. And Graal/Truffle are under the GPLv3, and only need JDK9 JVMCI interfaces, so I think it's mostly in the clear at this point... They can change the license, but they can't take away the code that's already open.

That said: I agree it seems extremely likely at this point that Oracle is going to milk Substrate for enterprise money, and that's a shame because it is a really important component of the system, in my opinion. And not having it will be a big drag for people who are considering Truffle/Graal.

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