Clojure Implemented in Pure Python

#1

Post by gdw2 » Wed, Feb 29, 2012, 9:51 PM UTC

Clojure Implemented in Pure Python
github.com

Re: Clojure Implemented in Pure Python

#2

Post by apatry » Wed, Feb 29, 2012, 10:01 PM UTC

Really nice. I hope it will make clojure scripts faster to start than with the jvm and thus a real alternative as a scripting language.

Re: Clojure Implemented in Pure Python

#3

Post by dhconnelly » Wed, Feb 29, 2012, 10:14 PM UTC

This is awesome.

Re: Clojure Implemented in Pure Python

#4

Post by mark_l_watson » Wed, Feb 29, 2012, 10:25 PM UTC

That looks nice. I have to ask: Clojure on the JVM is fast: can a PyPy runtime really compete after Hotspot has a chance to optimize?

Re: Clojure Implemented in Pure Python

#5

Post by Rayne » Wed, Feb 29, 2012, 10:34 PM UTC

mark_l_watson wrote: post #4

That looks nice. I have to ask: Clojure on the JVM is fast: can a PyPy runtime really compete after Hotspot has a chance to optimize?

I'm less concerned with speed on this platform. I think it'd be excellent even if only suitable for small scripts that need to start up fast.

Re: Clojure Implemented in Pure Python

#6

Post by moomin » Wed, Feb 29, 2012, 11:01 PM UTC

apatry wrote: post #2

Really nice. I hope it will make clojure scripts faster to start than with the jvm and thus a real alternative as a scripting language.

ClojureScript scripts can already do this. :)

Re: Clojure Implemented in Pure Python

#7

Post by rbranson » Wed, Feb 29, 2012, 11:09 PM UTC

mark_l_watson wrote: post #4

That looks nice. I have to ask: Clojure on the JVM is fast: can a PyPy runtime really compete after Hotspot has a chance to optimize?

All VM JITs compile to statically-typed machine code, so it's doubtful that building a VM from the ground up for dynamic code is going to yield major performance improvements. There are some enhancements that give VM-level visibility into dynamic invokation (like INVOKEDYNAMIC in JVM 7), but this has a relatively small performance impact on real-world codebases. In addition, the modern JVM is a sophisticated, highly-tuned machine with millions of man-hours on the books. It's unlikely to be eclipsed any time soon.

Re: Clojure Implemented in Pure Python

#8

Post by mattdeboard » Wed, Feb 29, 2012, 11:09 PM UTC

Er, what about Java interop? The notions of atoms, agents and refs? How are you going to translate these into "pure Python"?

Re: Clojure Implemented in Pure Python

#9

Post by chadzawistowski » Thu, Mar 01, 2012, 12:07 AM UTC

moomin wrote: post #6

apatry wrote: post #2

Really nice. I hope it will make clojure scripts faster to start than with the jvm and thus a real alternative as a scripting language.

ClojureScript scripts can already do this. :)

Are there many options for running ClojureScript scripts on a system outside of Node.js?

Re: Clojure Implemented in Pure Python

#10

Post by dkersten » Thu, Mar 01, 2012, 12:19 AM UTC

mattdeboard wrote: post #8

Er, what about Java interop? The notions of atoms, agents and refs? How are you going to translate these into "pure Python"?

CLR Clojure doesn't have Java interop either. Neither does clojurescript. I don't think its a requirement for a Clojure implementation.

Atoms, refs and agents seem like an integral part of the Clojure language however.