[ANN] new book: "ClojureScript: Up and Running"

[Stuart Sierra]

Not to toot our own horn, but people have been asking about getting started with ClojureScript, so here's our contribution, just released in book form:

ClojureScript: Up and Running
by Stuart Sierra and Luke VanderHart
published by O'Reilly in paper, eBook, and Safari

http://shop.oreilly.com/product/0636920025139.do

-S

[Softaddicts]

Already bought it weeks ago, like it, it's a concise recipe, right on target.

Disclaimer: I am not a blonde Stuart Sierra groupie :)

Luc P.

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[Stuart Sierra]

> Already bought it weeks ago, like it, it's a concise recipe, right on target.

Aw, thanks!

> Disclaimer: I am not a blonde Stuart Sierra groupie :)

Aw, shucks! ;)

-S

[charlie]

I look forward to my copy ( currently in the mail ) !

-S

[Robert Pitts]

Awesome. Would you say that this is essentially a completed work? Growing weary or reading and re-reading beta books lately.

Cheers regardless,

Robert

[Sean Corfield]

On Wed, Nov 7, 2012 at 4:23 PM, Stuart Sierra
<the.stua...@gmail.com> wrote:
> Not to toot our own horn, but people have been asking about getting started
> with ClojureScript, so here's our contribution, just released in book form:

...
> http://shop.oreilly.com/product/0636920025139.do

Nice. $15 and already sync'd to my DropBox on all my devices - some
light reading for the train in/out of SF tonight to listen to Rich
Hickey speak at the Bay Area Clojure Meetup!
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An Architect's View -- http://corfield.org/
World Singles, LLC. -- http://worldsingles.com/

"Perfection is the enemy of the good."
-- Gustave Flaubert, French realist novelist (1821-1880)

[Mayank Jain]

Try this code : MBBGS
It should give you 50% off on the book. Hopefully. :)

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Regards,
Mayank.

[Sean Corfield]

On Thu, Nov 8, 2012 at 2:39 PM, Mayank Jain <fires...@gmail.com> wrote:
> Try this code : MBBGS
> It should give you 50% off on the book. Hopefully. :)

Thanx but too late. One of my colleagues also bought it 50% off with a
different code. I'm happy with $15 :)

[Stuart Sierra]

On Thursday, November 8, 2012 4:14:03 PM UTC-5, Robert Pitts wrote:

Awesome. Would you say that this is essentially a completed work? Growing weary or reading and re-reading beta books lately.

Yes, the book is finished and out of beta.

There may still be periodic updates and bug fixes to the eBook in the future.

-S

[Ravindra Jaju]

I see you guys have kept that margin for updates/fixes already.

The copyright notice talks about the year 2013. :)
" Copyright © 2013 Stuart Sierra, Luke VanderHart."

Anyway, looking forward to spending some time with the book!

--
jaju

--

[kinleyd]

Awesome and congratulations. I look forward to picking up my copy.

[Mark Engelberg]

I just received the book today.  I was surprised to see how thin it is, but I'm glad the book exists.  I had a lot of trouble getting up and running several months ago, using only the scattered install instructions on the web.  It's nice to have a clear path to getting started.

Unfortunately, I can't get past page 8 and would appreciate some additional guidance.
Using the latest lein 2.0 preview 10, I did "lein new cljs2" to create a new project called cljs2.
Then, I edited the project.clj file as described in the book, using the latest version number for lein-cljsbuild:

(defproject cljs2 "0.1.0-SNAPSHOT"
  :description "FIXME: write description"
  :url "http://example.com/FIXME"
  :license {:name "Eclipse Public License"
            :url "http://www.eclipse.org/legal/epl-v10.html"}
  :dependencies [[org.clojure/clojure "1.4.0"]
                 [org.clojure/clojurescript "0.0-1450"]]
  :plugins [[lein-cljsbuild "0.2.9"]]
  :cljsbuild {:builds []})

Then, at the command prompt I typed:
lein trampoline cljs-build repl-rhino
and got the following error message.  I'm running on Windows.  Any idea what's going wrong?
Thanks.

C:\devel\Clojure\lein\cljs2>lein trampoline cljsbuild repl-rhino
Running Rhino-based ClojureScript REPL.
Exception in thread "main" clojure.lang.LispReader$ReaderException: java.lang.Ru
ntimeException: EOF while reading, starting at line 1
        at clojure.lang.LispReader.read(LispReader.java:215)
        at clojure.core$read.invoke(core.clj:3346)
        at clojure.core$read.invoke(core.clj:3344)
        at clojure.main$eval_opt.invoke(main.clj:295)
        at clojure.main$initialize.invoke(main.clj:316)
        at clojure.main$script_opt.invoke(main.clj:340)
        at clojure.main$main.doInvoke(main.clj:427)
        at clojure.lang.RestFn.invoke(RestFn.java:703)
        at clojure.lang.Var.invoke(Var.java:450)
        at clojure.lang.AFn.applyToHelper(AFn.java:212)
        at clojure.lang.Var.applyTo(Var.java:532)
        at clojure.main.main(main.java:37)
Caused by: java.lang.RuntimeException: EOF while reading, starting at line 1
        at clojure.lang.Util.runtimeException(Util.java:170)
        at clojure.lang.LispReader.readDelimitedList(LispReader.java:1117)
        at clojure.lang.LispReader$ListReader.invoke(LispReader.java:962)
        at clojure.lang.LispReader.read(LispReader.java:180)
        ... 11 more

[George Oliver]

On Monday, November 19, 2012 8:18:16 PM UTC-8, puzzler wrote:

Then, at the command prompt I typed:
lein trampoline cljs-build repl-rhino
and got the following error message.  I'm running on Windows.  Any idea what's going wrong?
Thanks.

These kinds of errors usually mean a file path or constructed command line is misquoted, double-quoted where it shouldn't be, etcetera. For example see issues like this, https://github.com/technomancy/leiningen/issues/674. Not sure myself what the problem is here since it seems like most of these issues have been closed but maybe there's something still there. 

 

[Sean Corfield]

I wonder if it's some aspect of lein trampoline on Windows. As I understand it, trampoline generates a file that is used to fire up the next process and it may well have some *nix-ism that isn't compatible with Windows?

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[Sean Corfield]

Looks like George nailed it with his note about issue 674 which came in while I was writing my (accurate but not particularly helpful) response...

[Mark Engelberg]

Ugh, I should have guessed.  My attempts to do clojurescript several months back were foiled by trampolining problems, but that was on lein 1.7.  I was under the impression those problems had been fixed in lein 2.0, so I had expected it to work, but it looks like there is still an issue.  Any easy workaround?

[George Oliver]

On Monday, November 19, 2012 9:34:29 PM UTC-8, puzzler wrote:

Ugh, I should have guessed.  My attempts to do clojurescript several months back were foiled by trampolining problems, but that was on lein 1.7.  I was under the impression those problems had been fixed in lein 2.0, so I had expected it to work, but it looks like there is still an issue.  Any easy workaround?

VirtualBox? :) 

[Mimmo Cosenza]

For what I know you do not need to explicitly write cljs dependency in project.clj if using lein-cljsbuild plugin which should already implicitly contain it.

try the following

$ lein new rhinotest

edit project.clj as follow

(defproject rhinotest "0.1.0-SNAPSHOT"

  :description "FIXME: write description"

  :url "http://example.com/FIXME"

  :license {:name "Eclipse Public License"

            :url "http://www.eclipse.org/legal/epl-v10.html"}

  :dependencies [[org.clojure/clojure "1.4.0"]]

  :plugins [[lein-cljsbuild "0.2.9"]]

  :cljsbuild {:builds []})

$ cd rhinotest

$ lein trampoline cljsbuild repl-rhino

mimmo

[Laurent PETIT]

2012/11/20 Mark Engelberg <mark.en...@gmail.com>

Ugh, I should have guessed.  My attempts to do clojurescript several months back were foiled by trampolining problems, but that was on lein 1.7.  I was under the impression those problems had been fixed in lein 2.0, so I had expected it to work, but it looks like there is still an issue.  Any easy workaround?

What happens if you just don't use trampoline at all ? (Is trampoline required, or just nice for saving some memory ?)
 

[Stuart Sierra]

`lein trampoline` was required to permit the CLJS REPL process to grab STDIN/STDOUT. According to a recent thread on the Leiningen mailing list, this may have been fixed in the Git master branch of Leiningen.

-S