Three years of a Scala lust affair, the blog post

[David Pollak]

Folks,

I've been doing Scala for three years as of today.  I wrote a blog post about it: http://blog.lostlake.org/index.php?/archives/97-Happy-3rd-Anniversay.html

There are a lot of people to thank for making Scala the great thing it is today.  Martin has led his EPFL team to bridge academia and commercial, vigorous debating and politeness, functional and object oriented to bring us Scala and the Scala community.

It's been 3 years for me and I can't think of a better language or a better community than what Scala has evolved into.

Thanks,

David

--
Lift, the simply functional web framework http://liftweb.net
Beginning Scala http://www.apress.com/book/view/1430219890
Follow me: http://twitter.com/dpp
Surf the harmonics

[tivrfoa]

I don't know Scala, but it must be a great language because many
important people are saying good things about it (http://
www.infoq.com/news/2009/07/scala-replace-java) and important companies
like Twitter, LinkedIn and eBay are using it.

In this video http://blog.linkedin.com/2009/06/15/video-linkedin-scala-tech-talk/,
Martin (Scala creator) says that he will concentrated his efforts, so
in 5 years Scala will be the language of choice for concurrency. This
is an awesome thing.
In this same talk, a Twitter engineer says that Erlang is not suited
to their environment, and the illustrious David Pollak (Lift creator
=) says that if Twitter uses Lift they would not need to worry about
their scale infrastructure. xD

I don't know if I learn Erlang or Scala first. Both seems to have a
great future (and already have a great present =).

On Nov 20, 6:21 pm, David Pollak <feeder.of.the.be...@gmail.com>
wrote:

> Folks,
>
> I've been doing Scala for three years as of today.  I wrote a blog post

> about it:http://blog.lostlake.org/index.php?/archives/97-Happy-3rd-Anniversay....

>
> There are a lot of people to thank for making Scala the great thing it is
> today.  Martin has led his EPFL team to bridge academia and commercial,
> vigorous debating and politeness, functional and object oriented to bring us
> Scala and the Scala community.
>
> It's been 3 years for me and I can't think of a better language or a better
> community than what Scala has evolved into.
>
> Thanks,
>
> David
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net

> Beginning Scalahttp://www.apress.com/book/view/1430219890

[tivrfoa]

testing... where is my post?

[David Pollak]

On Sat, Nov 21, 2009 at 3:17 PM, tivrfoa <lescou...@gmail.com> wrote:

I don't know Scala, but it must be a great language because many
important people are saying good things about it  (http://
www.infoq.com/news/2009/07/scala-replace-java) and important companies
like Twitter, LinkedIn and eBay are using it.

In this video http://blog.linkedin.com/2009/06/15/video-linkedin-scala-tech-talk/,
Martin (Scala creator) says that he will concentrated his efforts, so
in 5 years Scala will be the language of choice for concurrency. This
is an awesome thing.
In this same talk, a Twitter engineer says that Erlang is not suited
to their environment, and the illustrious David Pollak (Lift creator
=) says that if Twitter uses Lift they would not need to worry about
their scale infrastructure. xD

I did not say that.

The folks at Twitter (some of who are Lift committers) do in fact use Scala.

My exact quote (during a round-table at LinkedIn) is that a Lift application could handle 1/4 of Twitter's then-current traffic on a single server.  Specifically, Lift-based applications can handle > 2K dynamically generated pages per second on a quad-core Intel machine.  This compares with < 100 pages per second on a similar machine running Rails.

Twitter's scaling issues are not related, however, to the front end, but the back end.  Twitter's initial design put all the logic (and pressure) into the database.  There are only so many queries an RDBMS can do in a second. Twitter has over the last 18 months implemented a back end that does not put all of the timeline logic into the database.  This is independent of the web front end.

 

I don't know if I learn Erlang or Scala first. Both seems to have a
great future (and already have a great present =).

On Nov 20, 6:21 pm, David Pollak <feeder.of.the.be...@gmail.com>
wrote:

> Folks,
>
> I've been doing Scala for three years as of today.  I wrote a blog post

> about it:http://blog.lostlake.org/index.php?/archives/97-Happy-3rd-Anniversay....

>
> There are a lot of people to thank for making Scala the great thing it is
> today.  Martin has led his EPFL team to bridge academia and commercial,
> vigorous debating and politeness, functional and object oriented to bring us
> Scala and the Scala community.
>
> It's been 3 years for me and I can't think of a better language or a better
> community than what Scala has evolved into.
>
> Thanks,
>
> David
>
> --
> Lift, the simply functional web frameworkhttp://liftweb.net

> Beginning Scalahttp://www.apress.com/book/view/1430219890

> Follow me:http://twitter.com/dpp
> Surf the harmonics

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--

Lift, the simply functional web framework http://liftweb.net

Beginning Scala http://www.apress.com/book/view/1430219890

[Curt Sampson]

On 2009-11-21 15:17 -0800 (Sat), tivrfoa wrote:

> I don't know if I learn Erlang or Scala first. Both seems to have a
> great future (and already have a great present =).

If the question is what to learn first, rather than in what to start
implementing a major system, I'd chose Scala over Erlang.

Erlang's big feature over Scala (besides my impression that it has a
slightly more functional "feel") is its concurrent process and messaging
system, which is really a run-time thing rather than a language thing,
and which is a concept that's already reasonably familiar (in rather
less sophisticated form) to many programmers already.

Scala, on the other hand, offers a fairly sophisticated type system
including algebraic types, which is a concept rarely seen outside
of the FP world (ML and its relatives such as Haskell). That's very
mind-expanding, and well worth learning about.

You might also consider learning Haskell (or one of its relatives such
as Clean), which I consider to have more new concepts than any other
language out there except for perhaps Oz.

cjs
--
Curt Sampson <c...@starling-software.com> +81 90 7737 2974
Functional programming in all senses of the word:
http://www.starling-software.com

[tivrfoa]

Thanks very much for your reply Curt!

> If the question is what to learn first, rather than in what to start
> implementing a major system, I'd chose Scala over Erlang.

And if my question is: what to start implementing a major system?
Which one would you choose? =)

I'm Java programmer, so I would like to learn a language that do
things that Java can't (or can, but in a more difficult way).
Two things that I miss in Java is that a function is not a type, I
can't pass a function as parameter nor return a function like I do in
Scheme, and the other one is closure, I can't pass a block of code to
a function like I do in Ruby.
Just one thing of the above would be good, because one replaces the
need of the other, right?

I think the future (already the present in some places) is programming
for multi-cores. Erlang is a concurrent programming language, so maybe
is the better language for this purpose. There are some nice projects
using Erlang http://en.wikipedia.org/wiki/Erlang_%28programming_language%29#Projects_using_Erlang
and after watch this presentation http://www.infoq.com/presentations/Systems-that-Never-Stop-Joe-Armstrong
I become a little excited about Erlang.

I will take a look in Haskell. ;-)

[S. Alexander Jacobson]

I am strongly biased towards Haskell.

That being said, Java has anonymous classes which allow you to pass functions as parameters....

http://docstore.mik.ua/orelly/java-ent/jnut/ch03_12.htm

-Alex-

tivrfoa wrote:

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[tivrfoa]

Hi!

Yeah, polymorphism is a good workaround.

Thank you!

On Nov 25, 5:41 pm, "S. Alexander Jacobson" <a...@alexjacobson.com>
wrote:

> I am strongly biased towards Haskell.

> That being said, Java has anonymous classes which allow you to pass functions as parameters....http://docstore.mik.ua/orelly/java-ent/jnut/ch03_12.htm
> -Alex-
> tivrfoa wrote:Thanks very much for your reply Curt!If the question is what to learn first, rather than in what to start implementing a major system, I'd chose Scala over Erlang.And if my question is: what to start implementing a major system? Which one would you choose? =) I'm Java programmer, so I would like to learn a language that do things that Java can't (or can, but in a more difficult way). Two things that I miss in Java is that a function is not a type, I can't pass a function as parameter nor return a function like I do in Scheme, and the other one is closure, I can't pass a block of code to a function like I do in Ruby. Just one thing of the above would be good, because one replaces the need of the other, right? I think the future (already the present in some places) is programming for multi-cores. Erlang is a concurrent programming language, so maybe is the better language for this purpose. There are some nice projects using Erlanghttp://en.wikipedia.org/wiki/Erlang_%28programming_language%29#Projects_using_Erlangand after watch this presentationhttp://www.infoq.com/presentations/Systems-that-Never-Stop-Joe-ArmstrongI become a little excited about Erlang. I will take a look in Haskell. ;-) On Nov 21, 10:39 pm, Curt Sampson<c...@cynic.net>wrote:On 2009-11-21 15:17 -0800 (Sat), tivrfoa wrote:I don't know if I learn Erlang or Scala first. Both seems to have a great future (and already have a great present =).If the question is what to learn first, rather than in what to start implementing a major system, I'd chose Scala over Erlang. Erlang's big feature over Scala (besides my impression that it has a slightly more functional "feel") is its concurrent process and messaging system, which is really a run-time thing rather than a language thing, and which is a concept that's already reasonably familiar (in rather less sophisticated form) to many programmers already. Scala, on the other hand, offers a fairly sophisticated type system including algebraic types, which is a concept rarely seen outside of the FP world (ML and its relatives such as Haskell). That's very mind-expanding, and well worth learning about. You might also consider learning Haskell (or one of its relatives such as Clean), which I consider to have more new concepts than any other language out there except for perhaps Oz. cjs -- Curt Sampson      <c...@starling-software.com>       +81 90 7737 2974            Functional programming in all senses of the word:                    http://www.starling-software.com-- You received this message because you are subscribed to the Google Groups "CUFP" group. To post to this group, send email toc...@googlegroups.com. To unsubscribe from this group, send email tocufp+un...@googlegroups.com. For more options, visit this group athttp://groups.google.com/group/cufp?hl=en.