Posts Tagged programming

Free ad space if you donate to RVM

Hello People,

I am very much fond of rvm http://rvm.io/ . All the apps I have deployed runs on it. RVM needs funding so that it can be developed further. I want to hasten the process of funding.

I have written a ruby programming book named ‘I Love Ruby’ thats totally free, you can get it here http://goo.gl/FW6slH (this book will be released on jan 2014 or earlier)

If you donate $2000 to RVM I will grant full page advertisement, half page for $1000 and quarter page ad for $500. If you have donated these amounts you can contact me on mindaslab at gmail dot com so that I can put your ad in it.

The advertisement will stay till Jan 31 2014. It must be designed by you.

Please donate to RVM by going to https://www.bountysource.com/fundraisers/489-rvm-2-0

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This name calling thing

Well, I am a web developer for some long long time and web has changed a lot. A good change is Microsoft is almost out of web. No servers that are known to me run Windows and Internet explorer is dead for good (except few bloody large corporations). This blog is not about that it about another stuff.

There is this name calling thing in web technology which these marketing guys used / use to get more money from client. Long long ago we used a technique where the entire page need not get refreshed, but only part of it does. For this we need to write about 300 lines of code (which fortunately can be reused). Then people started calling it Ajax, and webpages having ajax costs a lot. Now Ajax can be written in 5 lines of code if you wish, thanks to jQuery and all other blah blah Javascript stuff.

Long before the term called “smart phones” was coined, we developers designed pages that can be seen even in mobile devices. This thing is now called responsive design and is promoted as a big thing. I really don’t understand what the fuss is about. When it was difficult to do, none promoted it, when it becomes easy, people give it a name and if they can do the most difficult stuff they project themselves as a big thing.

And there is another thing now called the cloud. Which essentially is cheating. Since we have a computer that have tetrabytes of memory, but memory on our handhelds is only gigabytes, but we are now in a age where tons of data can be streamed to us and we need real time stuff (thats the socio illusionary status society has created). If we have one data or update in one device we need that to be updated in another device too, this called for centralized server to sync things, and thats its. With virtualization we can have banks of computers say in USA, Europe, Australia and configure it in such a way that even if one fails other will take over. This thing too has been done for a long time. Now they call it the Cloud.

What the  &^#!@$$#@$#

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Ditching my Rails Book

Hello People,

Am ditching my Rails book. well, I am in  a full time job now, in a kinda hot situation (not that girls here makes me hot),  but some things makes my blood boil, like peoples insisting on using Windows and Ditching Linux. WHATTTTTTTTTTTT? Ya they say this and that for that. Plus there is ample things here to work on. So till my friends here become a programming Jedi, I wont be free.

So I am ditching my Rails book which I announced here, and am going to Improve my Ruby book which can be downloaded clicking here.

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Launching Ruby Links

Possible Ruby Links Logo

Possible Ruby Links Logo

Hello people. One problem with Ruby and its spinoffs like Rails, Sinatra and blah blah is that its documentation, books, tutorials are scattered all over the internet. I was wondering could this all be got under one place. In fact Google has done it. But is googlean excellent vertical specific search engine and book marking thing? No. Well I present you with http://rubylinks.net .

This is not a search engine though, all you can do is, if you find a great link about Ruby and its allied technology, you can post it here. If soe one likes it, they can jewel it. You are presented with your own page here all the links posted and jeweled by you are listed, so that there is no need for you to scratch your head and say, “where did I see that?”

Ruby Links is a free software, hosted here https://github.com/codetribe/ruby_links , please post bugs and suggestions there, ad if possible contribute for the benefit of Ruby community.

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Learning Postgre is Quiet Essential

When its in PHP, people always proffered LAMP, that is PHP running on Apache server,  data stored in MySQL and all this runs on Linux server. Now Rails is slowly bt surely chipping into PHP’s territory. ore people like to start their project with Rails than with PHP (at least the people I know). Or should  I say Sinatra as its very easy to learn.

Now there is a change here. MySQL was popular with Rails, but its no more now. Not because its technically inferior to Postgre, but because its owned by Oracle. Oracle is a big company. Its just interested in making profit unlike the free software community which is interested  in delivering software to people so that they can benefit out of it. This corporate interest has made MySQL stall. The initial creator of MySQL, Monty Widenus has even started another project called MariaDB, a drop in replacement to MySQL.

But the mood in Rails community is clear. Most Rails apps as far as I know run with PostgreSQL. So learn Postgre. If your app receives lot of hits, possibly tou might dig deep into raw sql to improve its performance. Postgre also has a thing called Geographic Information System in which you can store geographic data, and ask queries like ‘which is the bakery thats nearest to my home?’ and so on.

So if you are interested really and are sure that your app will be popular, use and dig into PostgreSQL.

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Upgrading to Ruby 2.0

If you are using the rvm for managing Ruby versions and are in Ruby 1.9.X version and want to upgrade to Ruby 2, this blog will help.  So hoping that you have installed rvm on your system this is how you upgrade to Ruby 2.0

First in your bash / terminal you need to tell rvm to check for latest stable release of Ruby. For that type this command (of course without the $)


$ rvm get stable

This will update rvm  with latest stable releases. Now you can get the list of known by typing this command


$ rvm list known

This will list some stuff like this


# MRI Rubies
[ruby-]1.8.6[-p420]
[ruby-]1.8.7[-p371]
[ruby-]1.9.1[-p431]
[ruby-]1.9.2[-p320]
[ruby-]1.9.3-p125
[ruby-]1.9.3-p194
[ruby-]1.9.3-p286
[ruby-]1.9.3-p327
[ruby-]1.9.3-p362
[ruby-]1.9.3-p374
[ruby-]1.9.3-p385
[ruby-]1.9.3-[p392]
[ruby-]1.9.3-head
[ruby-]2.0.0-rc1
[ruby-]2.0.0-rc2
[ruby-]2.0.0[-p0]
ruby-head

Notice that you have [ruby-]2.0.0[-p0] which is nothing but but Ruby 2.0,to install it type this


$ rvm install 2.0.0

Once installed to use Ruby 2.0 just type this


$ rvm use 2.0.0

Now how to switch to other versions of Ruby, well just type


$ rvm list

This will list the versions of ruby available in your system, the following is the out put in my system


rvm rubies

=* ruby-1.9.3-p362 [ x86_64 ]
ruby-2.0.0-p0 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

This shows I have Ruby 2.0 and Ruby 1.9.3-p362. To switch to  Ruby 1.9.3-p362 (in my case) type


$ rvm use 1.9.3-p362

and you would have switched to that version of Ruby!!!

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Changing Programming Landscape

Changing Programming Landscape

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