Clojure & Python, Side by Side • Hacker News Board

Re: Clojure & Python, Side by Side

#31

Post by vorg » Sat, Nov 19, 2011, 10:58 PM UTC

bretthoerner wrote: post #25

rglullis wrote: post #14

Earlier quoted context omitted.

That is certainly a problem. But there are very few language constructs in Python >= 2.6 that are missing in Python 2.5, and the really missing features (e.g, multiprocessing module) have better alternatives in the JVM, or are redundant. You lose some portability, but Jython 2.5 doesn't seem to be that limited in capabilities. Anyways, YMMV. All I got to do once was set my Django application to run on Jython, and tha…

While I'd agree Python 2.5 to 2.7 doesn't bring a swath of language features with it... it's a good sign of Jython's slowing/sluggish growth/development. Personally, I want to use a language implementation that will be around and (well!) supported for many years.

None of you three mentioned Python 3.0 to 3.2.

Re: Clojure & Python, Side by Side

#32

Post by sbochins » Sat, Nov 19, 2011, 11:08 PM UTC

skylan_q wrote: post #4

This is pretty cool. I know python well enough to hack my way around it. I'm probably missing something, but now I have to ask: what would be the point in me learning clojure?

This post has been on Hacker News multiple times. It usually comes up on the weekend when people post a lot of Clojure stuff. If you read the article, it says that the Clojure implementation was meant to mirror Norvig's Python implementation. The clojure code could certainly be written more succinctly. I thing there was another article that did this. Would have to look it up though.

Re: Clojure & Python, Side by Side

#33

Post by karavelov » Sat, Nov 19, 2011, 11:17 PM UTC

oacgnol wrote: post #30

amalag wrote: post #17

Would love to see this in Ruby

Is there a site out there that has common implementations of problems using different languages? I would love to be able to compare.

http://rosettacode.org/wiki/Category:Solutions_by_Programmin...

Re: Clojure & Python, Side by Side

#34

Post by rmnoon » Sat, Nov 19, 2011, 11:28 PM UTC

In addition to performance metrics, this site has implementations of their benchmarks in all the languages they test.

It's not pretty and side-by-side, but it's fascinating.

http://shootout.alioth.debian.org/

Re: Clojure & Python, Side by Side

#35

Post by genieyclo » Sat, Nov 19, 2011, 11:29 PM UTC

storborg wrote: post #3

I love this format. Can anyone point to more "Rosetta Stone" examples like this? (Aside from ever-prevalent "X in Coffeescript compiles to Y in Javascript")

http://hyperpolyglot.org/

Re: Clojure & Python, Side by Side

#36

Post by cageface » Sat, Nov 19, 2011, 11:29 PM UTC

phreakhead wrote: post #26

Python looks like a lot less typing.

And much more readable, without the parenthesis balancing dance.

Re: Clojure & Python, Side by Side

#37

Post by zurn » Sat, Nov 19, 2011, 11:49 PM UTC

dkersten wrote: post #22

skylan_q wrote: post #4

This is pretty cool. I know python well enough to hack my way around it. I'm probably missing something, but now I have to ask: what would be the point in me learning clojure?

Clojure has excellent concurrency support. Clojure has a focus on functional programming, immutable data[1] and the sequence abstraction[2]. Clojure is a Lisp and has most[3] of the super-powerful metaprogramming facilities that you would expect from a Lisp. This means you can, with enough effort, mold the language to suit your needs, even turning it into a completely different language should you wish to do so. Cloj…

"Pure Clojure code is, as far as I can tell, higher performance than pure CPython code."

Not so here; the author mentions that the Python version is faster (in his blog post).

Re: Clojure & Python, Side by Side

#38

Post by cop359 » Sun, Nov 20, 2011, 12:01 AM UTC

skylan_q wrote: post #4

This is pretty cool. I know python well enough to hack my way around it. I'm probably missing something, but now I have to ask: what would be the point in me learning clojure?

Follow up question.

How does it compare with Scala?

Re: Clojure & Python, Side by Side

#39

Post by dorkitude » Sun, Nov 20, 2011, 12:14 AM UTC

storborg wrote: post #3

I love this format. Can anyone point to more "Rosetta Stone" examples like this? (Aside from ever-prevalent "X in Coffeescript compiles to Y in Javascript")

SQL and MongoDB MapReduce side by side: http://dbpedias.com/w/images/9/90/MongoDB.JPG

Re: Clojure & Python, Side by Side

#40

Post by AlexBaranosky » Sun, Nov 20, 2011, 12:31 AM UTC

zurn wrote: post #37

dkersten wrote: post #22

Earlier quoted context omitted.

Clojure has excellent concurrency support. Clojure has a focus on functional programming, immutable data[1] and the sequence abstraction[2]. Clojure is a Lisp and has most[3] of the super-powerful metaprogramming facilities that you would expect from a Lisp. This means you can, with enough effort, mold the language to suit your needs, even turning it into a completely different language should you wish to do so. Cloj…

"Pure Clojure code is, as far as I can tell, higher performance than pure CPython code." Not so here; the author mentions that the Python version is faster (in his blog post).

Adding type hints to the relevant spots in the Clojure code might have helped him in terms of performance.