Anil Wadghule

Rack talk at Pune Rails Meetup

Sun, 09 May 2010 00:00:00 PDT

I gave a talk on 'Rack - a Ruby Webserver Interface' this weekend at Pune Rails Meetup #4 held at ThoughtWorks, Pune.

Here are the links for slides and GitHub repository of talk with codes.

http://pune-rails-meetup-rack.heroku.com/

http://github.com/anildigital/pune-rails-meetup-rack

My Git SVN workflow

Sun, 26 Jul 2009 00:00:00 PDT

Here is my Git SVN workflow

Tweet from command line

Sat, 11 Jul 2009 00:00:00 PDT

http://gist.github.com/143067 by @defunkt

Hack Day 09

Tue, 17 Feb 2009 00:00:00 PST

I participated in Open Hack Day 2009 by Yahoo! It was h'awesome! Gopal has uploaded following vid.. it's awesome

This is me, bean bag and macbook

Installing MySQL gem on Mac Leopard

Tue, 30 Dec 2008 00:00:00 PST

If you are getting following error on trying to install mysql gem on mac (Leopard, in my case)

$ sudo gem install mysql
Building native extensions.  This could take a while...
ERROR:  Error installing mysql:
ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb install mysql checking for mysql_query() in -lmysqlclient... no checking for main() in -lm... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lz... yes checking for mysql_query() in -lmysqlclient... no checking for main() in -lsocket... no checking for mysql_query() in -lmysqlclient... no checking for main() in -lnsl... no checking for mysql_query() in -lmysqlclient... no extconf.rb failed Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers.  Check the mkmf.log file for more details.  You may need configuration options.

Try following

$ sudo gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
Building native extensions.  This could take a while...
Successfully installed mysql-2.7
1 gem installed

The above thing is correct only if you have installed 32 bit MySQL dmg. If you have installed 64 bit MySQL dmg, you are sure to get following error on running rails server or any ruby app using mysql gem

dyld: lazy symbol binding failed: Symbol not found: _mysql_init
  Referenced from: /Library/Ruby/Gems/1.8/gems/mysql-2.7/lib/mysql.bundle
  Expected in: dynamic lookup

dyld: Symbol not found: _mysql_init Referenced from: /Library/Ruby/Gems/1.8/gems/mysql-2.7/lib/mysql.bundle Expected in: dynamic lookup

Trace/BPT trap

The reason is that MySQL Ruby gem build is 32 bit one and it doesn't work well with 64 bit MySQL dmg

To solve all this, uninstall installed 64 bit MySQL dmg as follows ( There is no good way to uninstall MySQL from Mac other than below)

 sudo rm /usr/local/mysql
 sudo rm -rf /usr/local/mysql*
 sudo rm -rf /Library/StartupItems/MySQLCOM
 sudo rm -rf /Library/PreferencePanes/My*
 edit /etc/hostconfig and remove the line MYSQLCOM=-YES-
 sudo rm -rf /Library/Receipts/mysql*
 sudo rm -rf /Library/Receipts/MySQL*

from - http://akrabat.com/2008/09/11/uninstalling-mysql-on-mac-os-x-leopard/

Now download and install 32 bit MySQL dmg

RubyConf08 videos gisted

Sun, 14 Dec 2008 00:00:00 PST

Here is the gist list of directly downloadable videos of RubyConf08 talks.

For small sized videos, visit http://gist.github.com/35631 For large sized videos, visit http://gist.github.com/35632

"You know you are a true Rahman fan when..."

Sun, 07 Dec 2008 00:00:00 PST

You have a peculiar taste in music, which does not necessarily have to match the taste of the "masses".
You have a good sense of melody and rhythm and can tell good music from average. You appreciate good music, regardless of who it comes from.
You can go on for hours talking about Rahman when someone makes a mistake of asking you about your favorite music.
You are never content and are always hungry and thirsty for more from Rahman.
You have had many euphoric moments in your life.. connected with Rahman's music.
You agree that an average Rahman song is better than the best most of the other can churn out.
Regardless of how the World finds Rahman music, you think Rahman makes music just for your ears. You genuinely believe that Rahman somehow knows what kind of music you unconsciously crave and then magically delivers that to you.
Your most prized collection in your entire music collection is your Rahman collection, whether it's in form of cassettes, CD's or hard-disk space on computer or ipods.
You sometimes feel this bliss, a kind of feeling that you are in heaven, when listening to Rahman's music.
If the World was to go back to using the barter system again, you wouldn't mind trading a 1000 non-Rahman songs for a single Rahman song.
You share this special bond with Rahman which is impossible to describe in words, let alone explain it to others.
Your friends/family fail to understand why you listen to music in a language that makes no sense to you, whatsoever. But, a few weeks later, you totally understand why your friends/family are humming/singing the very song they don't understand and were puzzled about you listening to it.
You are part of the Rahman Yahoo! Group or Orkut A R Rahman fans Community and visit it at least once a day.
You take pleasure in new group (community) members arguing with likes of Gops and Vijay, when they come out with some Rahman info/news.
You are tired of new member joining the group and inquiring about and referring to the fake "Ekyam Satyam". You too hope to listen to the real one someday, if it exists somewhere.
You can talk to any other Rahman fan and connect with them instantly.
You have a deep desire to meet Rahman in person, and know deep in your heart that one day your dream will come true.
You have thought of it many a times and tried to come up with a plan of what you would do? How would you react? when you actually meet Rahman.
You can find the challenging task of solving a complex problem rather easy compared to the daunting and difficult task of coming up with your absolute top-10 Rahman favorites.
Any criticism of Rahman is hard for you to digest, because most of the time it comes from people that haven't heard enough of Rahman and yet have no problem talking about him.
Your blood pressure tends to rise when an average listener sings praises for other MDs(especially Anu Malik, Harris J, and the more recent and annoying Himesh).
When it comes to R.D. Burman or may be Illayaraja, you tend to put an end to the conversation by saying... "No doubt, Illayaraja is the greatest, but I think Rahman is even better"... because it's true. (Self-fulfilling prophecy?)
You are a select few in the country that are familiar with obscure terms such as "BGM" or "Interlude" etc. And furthermore, you are a rare breed of fans that actually collects and listens to these "BGM" and "Musical bits" used in commercials.
You can listen to an hour of non-stop Rahman interludes and guess over 80% of them right.
You eagerly wait for each and every Rahman release, you set very high expectations for each album, a day after the release you will bash the album as below-average, a few months later you will hail the same album as a masterpiece and one of your personal favorites.
You suffer from this rare condition where... you wake up from your sleep, humming or singing a Rahman tune, involuntarily. You realize the condition is severe when you randomly shout out a Rahman tune you haven't heard in a long time.
You may forget to take your dose of medication but you can not forget to get your daily dose of Rahman.
You set high expectations of Rahman, and are honored and touched that he cares about you and works hard to satisfy you.
You know and realize that Rahman is potentially the most creative composer to ever live in India, and may be even the World.
You love and respect Rahman, the human being and not just Rahman, the composer.

Thoughts by Kaissiom (aka) Wasim from Orkut

I found this in A.R Rahman fans Yahoo group (arrahmanfans@yahoogroups.com)

Rails myths

Sun, 16 Nov 2008 00:00:00 PST

DHH has written series of posts about Rails myths. I thought it would be good to share the links.

* Myth #1: Rails is hard to deploy
* Myth #2: Rails is expected to crash 400 times/day
* Myth #3: Rails forces you to use Prototype
* Myth #4: Rails is a monolith
* Myth #5: Rails is hard because of Ruby
* Myth #6: Rails only speaks English

So create

Fri, 07 Nov 2008 00:00:00 PST

Why the lucky stiff on Twitter

when you don't create things, you become defined by your tastes rather than ability. your tastes only narrow & exclude people. so create.

Using OpenID delegation

Tue, 04 Nov 2008 00:00:00 PST

I am using OpenID (http://claimid.com/anildigital) for quite sometime. I am aware of benefits of using OpenID for logging in to different OpenID supported sites.

But I always had question, how OpenID solves the problem of multiple login ids. Suppose today you like http://claimid.com as OpenID provider, tomorrow you might like different OpenID provider. So if you create a new OpenID, you will use this new OpenID to logging in to OpenID enabled sites. Then what about previously using OpenID, what about all previous accounts created with it.

For all your previous accounts, if you want to keep the same account on site, you need to login with your old OpenID, . If you try to use new one, it will be treated as new OpenID and new account to the site. So finally using OpenIDs results into using multiple OpenIDs. That's why, I was really not impressed with OpenID concept.

But today, I came to know about this great concept, OpenID delegation. Its very simple and clean concept. What is it?

Delegation allows you to use your own website as your identifier while still using a third-party OpenID provider. This requires only the ability to add a small snippet of HTML code to the page you wish to use as your identifier.

So you can use your own website address as OpenID, in my case it is anilwadghule.com. You could setup delegation with any of OpenIDs. You could keep changing your OpenID from OpenID providers and just use your site address as delegated OpenID.

You need to add following code to your sites index.html or any index page, which gets rendered when you hit yoursite.com


<link rel="openid.server" href="https://www.myopenid.com/server">
<link rel="openid.delegate" href="http://anildigital.myopenid.com">

Now you can use your website address as your OpenID. Thats it. In my case it is anilwadghule.com

Now you don't want myOpenID as OpenID provider and you think claimid.com is better OpenID provider just replace above snippet with code


<link rel="openid.server" href="http://openid.claimid.com/server" />
<link rel="openid.delegate" href="http://openid.claimid.com/anildigital" />

And now you can still use your delegated OpenID to login to different OpenID enabled websites.

Awesome right?. So go start using your website address as OpenID!