Jarc> (let x 10 (let y 11 (+ x y z)))
Error: Symbol 'z' has no value
0: z
DEBUG 0: b
Backtrace:
0: z
1: (+ x y z)
2: ((fn (y) (+ x y z)) 11)
3: ((fn (x) (let y 11 (+ x y z))) 10)
4: (with (x 10) (let y 11 (+ x y z)))
5: (let x 10 (let y 11 (+ x y z)))
0: z
DEBUG 0: h
Debugger commands:
b Print the Lisp backtrace
d Move down the backtrace
e Eval following expression
f Move to the specified frame
h Print this help
m Print the error message
p Print the current frame in the backtrace
q Quit the debugger and return to top-level
r Return following expression as value of current frame
s Print the Java stack trace
u Move up the backtrace
0: z
DEBUG 0: e x
10
0: z
DEBUG 0: r 13
34
Jarc>
(use 'sql)
(sql-driver "com.mysql.jdbc.Driver")
(= jdbc-url "jdbc:mysql://localhost/MyDB")
(= db-username "root")
(= db-password "")
(def blah-create ()
(with-open db (sql-connect jdbc-url db-username db-password)
(sql-update db
"CREATE TABLE Blah (
id INTEGER NOT NULL PRIMARY KEY,
value VARCHAR(100) NULL
) TYPE=InnoDB")))
(def blah-insert-values (id value)
(with-open db (sql-connect jdbc-url db-username db-password)
(sql-update db "insert into Blah (id,value) values (?,?)" id value)))
(def blah-insert (blah-obj)
(with-open db (sql-connect jdbc-url db-username db-password)
(sql-insert db "Blah" blah-obj)))
(def blah-list ()
(with-open db (sql-connect jdbc-url db-username db-password)
(with-open stmt (sql-stmt db "select id,value from Blah")
(with-open rs (sql-query stmt)
(while (next rs)
(prn (getObject rs 1) "\t" (getObject rs "value")))))))
(def blah-update-values (id value)
(with-open db (sql-connect jdbc-url db-username db-password)
(sql-update db "update Blah set value=? where id=?" value id)))
(def blah-update (id blah-obj)
(with-open db (sql-connect jdbc-url db-username db-password)
(sql-modify db "Blah" blah-obj "where id=?" id)))
Jarc> (blah-create)
0
Jarc> (blah-insert-values 10 "can")
1
Jarc> (blah-insert (obj id 11 value "cannot"))
1
Jarc> (blah-list)
10 can
11 cannot
nil
Jarc> (sql-trace 't)
nil
Jarc> (blah-update 11 (obj id 11 value "can't"))
SQL: com.mysql.jdbc.PreparedStatement@5c435a3a: update Blah set value='can\'t',id=11 where id=11
1
Jarc> (blah-list)
SQL: com.mysql.jdbc.PreparedStatement@585976c2: select id,value from Blah
10 can
11 can't
nil
Tracing displays the SQL statements (in the current thread only). Prepared statements are used in the implementation which improves performance and minimizes SQL injection attacks.
SQL selects require closing the result set (rs) before closing the statement, so the statement (stmt) has to be created explicitly when using sql-query. When using sql-update the statement is created internally.
The macro with-open does the same things as let and then also calls close at the end of the let body.
For a more complete example see testsql.sql.
Jarc> (match "(\S+) " "foo bar")
"foo"
Jarc> (let it "foo bar baz" (match "(\S+) (\S+)"))
("bar" "foo")
Jarc>
Like Perl, match searches the default variable, which in Arc is "it".
(use 'jtml)
(def /hello (req res)
(html
(head)
(body
"Hello World. "
;; Query parameters are available by apply:
(p "Hi to " req!name)
;; All getXXX methods of HttpServletRequest are available by apply also:
(p "Request method is " req!Method)
(p "Cookies: "
(ul
(each cookie req!Cookies
(li (pr (getName cookie) '= (getValue cookie))))))
(p (link '/ "Index"))
)
)
)
(def msec () (getTime (new java.util.Date)))
The "new" function creates an instance of a Java class.
The interpreter dispatches on the first argument. [1] So "getTime" is a Java method on Date. Jarc does a run-time method lookup on the Java class and finds "getTime". Arguments are automatically converted into the appropriate Java types to make the call whereever possible. In this simple example there are no arguments being passed to "getTime".
Static Java method calls also look just like Arc function calls:
(def system (cmd)
(let proc (exec (java.lang.Runtime.getRuntime) cmd)
(let in (new java.io.BufferedReader
(new java.io.InputStreamReader (getInputStream proc)))
(awhile (readLine in) (prn it))
(close in))))
This conflicts with the dot notation in Arc. Jarc trades-off compatibility in this one instance for easier Java method access. It saves typing one whole token!
If a static method is not found, then Arc dot notation semantics are used, so in practice there isn't any conflict.
Starting with Jarc 8 methods on java.lang.String automatically apply to Jarc strings.
(replaceAll "foo" "o" "e") => "fee"You can override methods on java.lang.String with macros, but not with functions. Java method calls take precedence over Arc functions. And macros take precedence over everything, of course.
I started writing this because I wanted a powerful language to write quick and dirty throw-away programs that call existing Java APIs. Like the Java API for the network management product I work on during the day. The main goal is that calling Java classes should be as concise as possible.
Jarc began in 2005 before Paul Graham released arc0. He had written enough on his web site about his ideas for Arc, that I was able to build something close to what Arc actually is.
I have used this at work to build two prototypes and also for some throw-away data crunching. It has been a great tool. Much better than writing in Java!
After Arc was released I updated Jarc to be compatible with Arc.
The biggest difference was that Jarc had dynamic binding and Arc does not. Changing that broke the cool things about Arc, like the debugger and sql package. They had to be converted to not rely on dynamic binding.
Jarc version 12 has been released at Jarc SourceForge download page.
You can also browse the source code on SourceForge.
[1] Paul Graham suggested that Arc might have dispatch on first arg in Arc at 3 Weeks.
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iCandies – a new free iconset | IconEden's Blog http://t.co/9RbtP6B via @iconedenAbout 4 hours ago
What does it mean to be conscious? It's a question that philosophers and scientists have puzzled over perhaps since there have been philosophers and scientists.
In his book "Consciousness Explained," Tufts University philosopher Daniel Dennett calls human consciousness "just about the last surviving mystery," explaining that a mystery is something that people don't yet know how to think about. "We do not yet have all the answers to any of the questions of cosmology and particle physics, molecular genetics and evolutionary theory, but we do know how to think about them," writes Dennett. "With consciousness, however, we are still in a terrible muddle. Consciousness stands alone today as a topic that often leaves even the most sophisticated thinkers tongue-tied and confused. And, as with all of the earlier mysteries, there are many who insist—and hope—that there will never be a demystification of consciousness."
On a base level, consciousness is the fact of being awake and processing information. Doctors judge people conscious or not depending on their wakefulness and how they respond to external stimuli. But being conscious is also a neurological phenomenon, and it is part of what allows us to exist and understand ourselves in the world.
Dr. Antonio Damasio, a neuroscientist from the University of Southern California who has studied the neurological basis of consciousness for years, tells Big Think that being conscious is a "special quality of mind" that permits us to know both that we exist and that the things around us exist. He differentiates this from the way the mind is able to portray reality to itself merely by encoding sensory information. Rather, consciousness implies subjectivity—a sense of having a self that observes one’s own organism as separate from the world around that organism.
"Many species, many creatures on earth that are very likely to have a mind, but are very unlikely to have a consciousness in the sense that you and I have," says Damasio. "That is a self that is very robust, that has many, many levels of organization, from simple to complex, and that functions as a sort of witness to what is going on in our organisms. That kind of process is very interesting because I believe that it is made out of the same cloth of mind, but it is an add-on, it was something that was specialized to create what we call the self."
Scientists don't fully understand what is happening in the brain that creates what we call consciousness, but researchers like Damasio are refining our knowledge about how firing neurons can lead to our thoughts and experience of the world.
Twelve years ago, Cal Tech professors Christof Koch and Francis Crick put forward the idea that consciousness resides in the brain's prefrontal cortex; they described where in the brain we experience things when we experience them—but not why we do. In 2009, physicist Roger Penrose and anesthesiologist Stuart Hamerhoff advanced a "quantum mind theory" that took Koch and Crick's ideas to a deeper, cellular level, suggesting that consciousness is a result of quantum mechanics, with microtubules inside the brain working as computing elements in a system they call "orchestrated objective reduction." The theory suggests that human consciousness is a result of the wave functions of quantum particles collapsing once they reach specific energy levels. Hamerhoff's blog, Quantum Consciousness, describes this theory in depth, and details how he and Penrose believe the brain's neural networks and cells process information that results in consciousness. Critics of the quantum mind theory contend that consciousness is hardly demystified by relating the brain to the rarefied realm of subatomic physics.
One thing to keep in mind is that consciousness is not uniform among humans, according to Damasio. Different people may experience consciousness in different ways, and it can be difficult to make comparisons of people's subjective perceptions of reality with very much detail. Nonetheless, he notes: "When you look at people that say, from the same culture, roughly the same age, and not very difference intelligence, and you make a lot of detailed questions about the experiences of say colors, situations, and so on, you’ll get very similar answers. So I think it’s reasonable to say that even though, in all likelihood, we have slightly different experiences of reality, they are similar enough to us not to clash."
Studies of consciousness don't all center on wakefulness. Dr. Sam Parnia, director of the Human Consciousness Project, embarked in 2008 on a three-year, 1500-patient quest to try and figure out whether people continue to be conscious when their bodies are clinically dead. Analyzing reports of near-death experiences when patients are in cardiac arrest, the project is seeking quantifiable data about what happens in a person's brain when oxygenated blood stops flowing, and whether we then continue to think consciously.
|
Takeaway What we call consciousness is the fact of our having a subjective experience of the world—it is our sense that the world is separate from us, and that we exist independently. While it is unclear exactly how neural firings in specific parts of the brain result in this kind of subjective thought, it's believed that conscious thinking is related to the prefrontal cortex—and possibly extends down to a cellular level. |
More Resources
— PhysOrg article describing Roger Penrose and Stuart Hamerhoff's theory of quantum mechanics in consciousness and "orchestrated objective reduction.
— Quantum Consciousness blog's description of the brain science behind subjective thought.
— "The First Few Minutes After Death," 10/31/2008 article from Popular Science.
— "Consciousness and Neuroscience," 1998 article by Francis Crick and Christof Koch from the journal Cerebral Cortex.
Original content is for Non-commercial use under Creative Commons. Except where otherwise noted.
Some Rights Reserved. Attribution-Noncommercial-Share Alike 3.0 United States License.
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Welcome to the new home of Practical PHP Programming - now updated for PHP 5.2. This is the definitive source for the book from now on, and you'll be pleased to know the entire book is hosted on a super-fast server so you should never have access troubles again.
While updating the text, we have endeavoured to leave chapters in place even if we think they are no longer the smartest option - after all, it's not for us to decide what you should use. In places where we recommend one solution over another, you'll find this clearly marked.
Make sure you check out the other coding tutorials hosted here on TuxRadar!
Copyright 2010 Future Publishing Limited (company
registered number 2008885), a company registered
in England and Wales whose registered office is at
Beauford Court, 30 Monmouth Street, Bath, BA1 2BW, UKEvery think tank created usually has a public policy agenda focused on a variety of political, financial, educational or even moral issues. The following 25 up and coming think tanks are no different, as they address issues that mainly adhere to a strict bi-partisan (or centrist) perspective or lean left or right politically. What makes these think tanks interesting is that they have been formed since 2004, or since the middle of the previous presidential administration.
These groups have been divided by political leaning and also are listed by year created, from earliest to the latest within those political categories. For more think tanks developed over the years, you might visit the list of think tanks gathered at Wikipedia.
Pew Research Center (2004): The Pew Research Center is an American think tank organization based in Washington, D.C. that provides information on issues, attitudes and trends shaping the United States and the world.
Committee for a Constructive Tomorrow (2004): CFACT is a member organization of the Cooler Heads Coalition, which aims at “dispelling the myths of global warming through sound science and analysis.”
National Security Network (2006): The National Security Network (NSN) was founded to revitalize America’s national security policy, bringing cohesion and strategic focus to the progressive national security community. It also hosts the liberal global affairs blog Democracy Arsenal.
Clemson Institute for the Study of Capitalism (2005): The mission of The Clemson Institute for the Study of Capitalism is to examine and to increase public awareness of the moral foundations of capitalism.
Previous post: Top 50 Public Policy Bloggers
Copyright © Masters in Public Policy, 2010
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Site created by Mark Warner. Thanks to everyone who has contributed!
It takes just a minute to transform your world: 
just-a-minute is all it takes to bring ourselves back to our natural state of inner peace and well-being. Learn to relax, refocus and re-energise in just one minute with 'just-a-minute' meditations. It is about becoming a powerful positive force in your own life. Give yourself just-a-minute to experience it now.
"Be relaxed,
Be present ... Be powerful,
Be inspired ... Be your true self"
Copywriting and Content Marketing Strategies
A landing page is any page on a website where traffic is sent specifically to prompt a certain action or result. Think of a golf course… a landing page is the putting green that you drive the ball (prospect) to.
Once on the green, the goal is to get the ball into the hole. Likewise, the goal of the copy and design of a landing page is to get the prospect to take your desired action.
Here are a few examples of ways that landing pages are used with various traffic sources:
Here are six articles that will help you start creating killer landing pages right away:
Here are 28 real-life landing page makeovers with detailed tips and suggestions for improvement:
Subscribe to Copyblogger to learn more about landing pages and copywriting.
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lil2u.com Launches - a simple and easy to use URL shortener (Announcement) |  |
gem install geminabox
At work we have several in house gems we use. We don't want to make them public to the internet, but we do want to share them between the developers, and the QA boxes.
We were using make-gem-now, but that was always a little messy, and not in keeping with current best practices.
So a new plan formed, we need an internal gemcutter.com, which is very doable.
So I started looking into it, and then I realised that we would all have to have ownership of the gems, and maintain that at all times… basically it was a bad fit for us as we do not need authentication, Amazon S3 or any of that bollocks.
A small sinatra app borrowing heavily from both make-gem-now and gemcutter.
$ gem install geminabox
Create a config.ru as follows:
require "rubygems" require "geminabox" Geminabox.data = "/var/geminabox-data" # …or wherever run Geminabox
And finally, hook up the config.ru as you normally would (passenger, thin, unicorn, whatever floats you boat).
$ gem install geminabox $ gem inabox pkg/my-awesome-gem-1.0.gem
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Free PHP Books
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We're in a new kind of energy crisis—and this one's personal. The Energy Project offers organizations and individuals a ground-breaking, science-based approach to fueling sustainable personal energy.
Decide in advance what you’re going to eat, in what portions, and at what intervals. It’s the best way to avoid endless temptations, unconscious cues, and “that-looks-good...
The Energy Project helps individuals and organizations fuel sustainable high performance. We do this through a variety of services aimed at addressing the needs of organizations, managers and leaders, and individuals.
What is The Energy Project?
How We Work with Organizations
The Way We're Working
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Wednesday, September 1, 2010
jQuery and Ajax Best Demos Part-7
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A Collection of jQuery, Ajax and PHP Tutorials with live demos, tutorials posted on 9lessons blog. In these demos I had explained about jquery connectivity with MySQL database, Ajax implementation, JSON with PHP and Animation addons to your web pages. I hope it's useful for you. Thanks!         Live Demo  Sponsored Links
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Srinivas TamadaEngineer, Programmer, Designer, I love the web BARUVA - INDIA srinivas [at] inbox.com 
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Feb 09
As a sort of follow-up to yesterday’s post, I’ve prepared a PDF infographic of how the clauses in a moderately-complex SQL statement relate/translate to the JavaScript of MapReduce functionality in MongoDB. Clickity-click for the larger, printable PDF version (188KB).
Infographic visualizing the relationship between SQL and MapReduce on MongoDB
OpenBTS is an open-source Unix application that uses the Universal Software Radio Peripheral (USRP) to present a GSM air interface ("Um") to standard GSM handset and uses the Asterisk® software PBX to connect calls. The combination of the ubiquitous GSM air interface with VoIP backhaul could form the basis of a new type of cellular network that could be deployed and operated at substantially lower cost than existing technologies in greenfields in the developing world.
In plain language, we are working on a new kind of cellular network that can be installed and operated at about 1/10 the cost of current technologies, but that will still be compatible with most of the handsets that are already in the market. This technology can also be used in private network applications (wireless PBX, rapid deployment, etc.) at much lower cost and complexity than conventional cellular.
Typical OpenBTS development kit: USRP, laptop and handsets. This particular example has a range of just a few meters, but can connect inbound and outbound PSTN calls through a VoIP gateway. Network in a small box.
The OpenBTS pilot in Niue is still running. The story is pretty well blogged out, all orgnaized here.
Our Burning Man 2009 test was a success. The results are described in the project blog (linked from that page) and were presented at Astricon 2009. If you are looking for the old Burning Man 2008 write-up, it's back at sf.net.
Copyright 2008, 2009, 2010 Kestrel Signal Processing, Inc.
OpenBTS is a registered trademark of Kestrel Signal Processing, Inc.
Please note that "OpenBTS" is a registered trademark of Kestrel Signal Processing, Inc.
Do not use the "OpenBTS" name in commercial activities without permission.
Asterisk is a registered trademark of Digium, Inc.
Télécharger le player flash pour voir le site
De nouvelles saveurs vous attendent dans notre sélection de recettes du mois de septembre !
On entend beaucoup parler de la plante stévia et de l'édulcorant qui en est extrait, le rébaudioside A. Est-ce vraiment l'Eldorado sucré annoncé ? Attention aux raccourcis !
HTML(XHTML)+CSSホームページテンプレートやアイコンãªã©ã‚’ç„¡æ–™é…布をã—ã¦ã„ã¾ã™ã€‚CSSテンプレートã¯å€‹äººåˆ©ç”¨ã¯ã‚‚ã¡ã‚ã‚“ã€ä¼æ¥ã‚µã‚¤ãƒˆã‚„ãƒãƒƒãƒˆã‚·ãƒ§ãƒƒãƒ”ングãªã©ã®å•†ç”¨åˆ©ç”¨ã‚‚ã§ãã¾ã™ã€‚
ãƒã‚¤ãƒ¤ãƒªãƒ†ã‚£ãƒ•ãƒªãƒ¼ï¼ˆè‘—作権使用料ãŒç„¡æ–™ï¼‰ã®CSSテンプレートã§ã™ã€‚商用ホームページã«ã‚‚ç„¡æ–™ã§ã”利用ã„ãŸã ã‘ã¾ã™ã€‚
一般的ã«ãƒ•ãƒªãƒ¼ï¼ˆç„¡æ–™ï¼‰ã®CSSデザインテンプレートã¯ã€è‘—作権表示ãŒç¾©å‹™ä»˜ã‘られã¦ã„ã‚‹ã‚‚ã®ãŒå¤šã„ã§ã™ãŒã€å½“サイトã®CSSデザインテンプレートã¯ã€ãƒ›ãƒ¼ãƒ ページテンプレートã¯ã‚‚ã¡ã‚んソースコードã«ã‚‚著作権表示をã™ã‚‹å¿…è¦ã¯ä¸€åˆ‡ã‚ã‚Šã¾ã›ã‚“。
æ–‡ç« ã¯HTMLã€ãƒ‡ã‚¶ã‚¤ãƒ³ã¯CSSã¨å®Œå…¨ã«åˆ†é›¢ã—ã¦ãŠã‚Šã€åˆå¿ƒè€…ã®æ–¹ã§ã‚‚カスタマイズ（編集）ã—ã‚„ã™ã„よã†ã«å¿ƒãŒã‘ã¦ã„ã¾ã™ã€‚
当サイトã®HTML＋CSSデザインテンプレートã§ãƒ›ãƒ¼ãƒ ページを制作ã®éš›ã€ã©ã†ã—ã¦ã‚‚ã†ã¾ãã§ããªã„ã“ã¨ãŒã‚ã‚Šã¾ã—ãŸã‚‰ãŠæ°—軽ã«ãƒ¡ãƒ¼ãƒ«ã‚’ãã ã•ã„。ホームページ制作ã®ãŠæ‰‹ä¼ã„ã‚’ã„ãŸã—ã¾ã™ã€‚（ãŸã ã—ã€è¿”ä¿¡ã«ã¯æ•°æ—¥ã„ãŸã ãå ´åˆãŒã‚ã‚Šã¾ã™ã€‚ã”了承ãã ã•ã„。）
例ãˆã°ã€Webデザイナーã•ã‚“ãŒå½“サイトã®HTML＋CSSデザインテンプレートを使用ã—ã¦ãƒ†ãƒ³ãƒ—レート制作代行を行ã„ã€è²©å£²ã™ã‚‹ã“ã¨ã¯å¯èƒ½ã§ã™ã€‚ãã®å ´åˆã€å¿…ãšã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆå‘ã‘ã®å®Œæˆã•ã‚ŒãŸãƒ›ãƒ¼ãƒ ページã«ä»•ä¸Šã’ã¦ãã ã•ã„。汎用性をæŒãŸã›ã¦ä¸ç‰¹å®šå¤šæ•°ã«è²©å£²ãƒ»é…布ã™ã‚‹ã“ã¨ã¯ç¦æ¢ã—ã¾ã™ã€‚
ãã®ä»–ã®ç‰¹å¾´ã¯ãƒ»ãƒ»ãƒ»
・W3Cã«æº–æ‹ ã—ãŸè¨˜è¿°ã‚’ã—ã¦ã„ã¾ã™ã€‚
・HTML(XHTML)/CSSテンプレートテンプレートãªã®ã§ã€ã‚µãƒ¼ãƒã‚¨ãƒ³ã‚¸ãƒ³ã®æœ€é©åŒ–（SEO）も容易ã§ã™ã€‚
・クãƒã‚¹ãƒ–ラウザ対応ã§ã™ã€‚（IE6, IE7, IE8, Firefox, Safari, Opera for Windows. Safari for Mac OS X）
・当サイトãŒä½œæˆã—ãŸç”»åƒã¯psdファイルãŒä»˜ã„ã¦ã„ã¾ã™ã€‚
Covers the PHP programming language for readers with some experience in other programming languages or
who know PHP basics and want to learn more.
This book is for experienced programmers and Web developers regardless of the language program in, but especially for
HTML developers. It includes practical examples and projects.
.
A book for more advanced readers, it covers many PHP 5 topics including PHP’s new object model, powerful design patterns,
building XML-based Web services with XML-RPC and SOAP, integrating with MySQL, SQLite, and other database engines,
improving script performance with tips and tools for PHP optimization, efficient error handling, migrating PHP 4 code, and other topics.
A pretty specialized topic. I include it because someone might be interested.
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