Bei der Arbeit an einer Präsentation über Ruby hatte ich das Problem Quellcode mit syntaxhighlighing in Keynote zu bekommen. Dabei bin ich auf das geniale Copy as RTF TextMate bundle von Max Muermann gestoßen.
Nach der Installation kann man über das Bundle beliebigen Quellcode in die Zwischenablage kopieren und das Highlighting bleibt als RTF erhalten. Programme, die RTF unterstützen (wie Keynote), kann man so sehr einfach mit Codeschnipseln versorgen.
For measure working time on windows I wrote a little script. It calculates the time since the last login. The output of the script looks like this:
Login: 10:10 Now: 18:13 ====================== Working time: 8 h 3 m
The script is written in Ruby and runs under cygwin. I saved the script in a folder tools in my homedir and have the following alias in my .bashrc:
So finally the script looks like this:
Known issues: The script is based on the windows command systeminfo. Systeminfo returns values in the language of the operating system. So this works only with a german windows. Replace “Systembetriebszeit” with whatever your systeminfo command returns for the uptime.
Finally I found time to finish my writeup about the second day of railswaycon 2009.
Michael showed some examples how to integrate Java with Ruby. The reasons for integrating Java with Rails might be reruse of java code or a smooth transitition to Rails.
He showed some swing programming from the jruby console and he used a EJB enitity bean fasade with a rails controller to provide a restinterface.
The talks was in a bit slow in general. I think Johann an the croud was still a bit tired from the webinale party the day before. But the talk gaves a really great overview integrating java with ruby.
In his Keynote Yehuda haves an an overview of Rails 3 which will be a merge with Merb.
In Rails 3 every part of rails will be a standardized Rack app. Rails with using Rack as a Core feature will be able to use and provides middleware in the rack standard. This will make testing much easier, because you can just mock every rack part of Rails.
This will make it much easier to replace parts of Rails with your own stuff. For example replace Active Record with Sequel or DataMapper and keep the Rails form magick work. Or replace prototype/script.aculo.us with jquery without loosing the rails ajax helpers.
Great Keynote!
Neal gaves an overview how thoughtworks build on of the biggest rails apps. It’s the vehicle trade plattform ove.com.
According to Neil ove has about 7million page views per week and they build the app with 11 pairs of developers, 8 buisness analysts and other staff.
He gaves a great overview how the development process at thoughtworks works and how the solve their problems.
Maik explaind how to solve typical problems programmers will face when developing Rails applications in a common enterprise environment.
Like large amounts of date in xml files lets you run in performance problems with rexml (you can solve them with using libxml).
Or i18n will force you to monkey patch active record because the sales department want different looking validation error messages.
A really great talk.
Ola gives an awesome Keynote about his toughts on programming languages in general.
The talk was really great and he gives so much information in a short time that is hard to
cover everything in a blog entry. He made some assumtions which I will repeat here for you:
Alex talk was about CouchDB. Apache CouchDB is a distributed, fault-tolerant and schema-free document-oriented database accessible via a RESTful HTTP/JSON API.
So, why Couch DB?
Alex says:
The english was a bit hard to understand in some parts of the presentation. And I missed some comparison between CouchDB and a relational db model.
Steven demonstrated 5 revisions of less accounting to get an impression how the user interface of the app changed and improved over the time.
Steven gave some nice tips for making a good ui:
After running late because of some trouble with the berlin railways. I’ve skipped the first RailsWayCon Session and attended to the Webinale Keynote Phänomen Web 2.0 with Ossi Urchs .
The Talk was about Web 2.0 Basics and how the web has and will change buisness. It was nothing really new for me and most of the croud but a great summery of web 2.0 in general.
Speaker: Jan Krutisch
Jan gives a really nice talk about haml. Haml is a markup language that’s used to cleanly and simply describe the XHTML of any web document without the use of inline code.
Accourding to Jan this are the pros on haml:
An this are the cons:
The other part of the session was about SASS which means Syntactically Awesome StyleSheets. The language comes with haml but can also used for it’s own. It solves some problems with css. A weird thing with cascading style sheets is that they doesn’t support real cascading. Sass solves this problem and also adds constants, calculations and imports.
Speaker: Steven Bristol
Steven gives an intersting talk about problems he run into when moving his application LessAccounting to jruby. He decided to move the jruby because he had to implement a third party api written in java. The first Problems he run into was that all compiling gems like ferret or file column doesn’t work in jruby. So he had to replace this parts in his applications with other solutins.
The biggest Problem he run into was the deployment of the application with glass fish. After get everything running he still has the problem that the deployment with glass fish is much slower than with mongrel before.
His recomendation if somebody run into the same problem is don’t move your whole app to jruby. Just build a small application which exposes a rest interface.
The conference on Ruby, Rails and more. Auf nach Berlin:
Preparations:
Install CentOS with Apache and Mysql.
1. Install ruby enterprise:
2. Create some links:
3. gem install rails -v 2.X.X
Problems:
I’ve got problems with missing Mysql libraries. To fix this:
3.1 Install mysql-devel
3.2 Install mysql-gem
4. Passenger (mod_rails)
4.1 Install Passenger (mod_rails)
4.2 Passenger Apache Module
5. ImageMagick
5.1 Install ImageMagick Libraries
5.2 Install rmagick via gems
Problems:
Parameter –version doesn’t work.
Don’t use the parameter “–version”
Read more about this problem:
http://www.beanlogic.co.uk/2008/8/13/installing-a-specific-verison-of-rmagick
Missing msfonts
Installation of msfonts according to:
http://hi.baidu.com/rainchen/blog/item/089ef7364497de320a55a9a3.html
6. Config of apache and your rails app
For configuration of passenger follow the instructions there
Thats it!
Wow tolle Nachrichten zu Weihnachten. Merb wird in Rails 3 gemerged. Damit wird Rails modularer, schneller und bekommt eine stabilere API für Plugins. Frohe Weihnachten.
Weitere Infos:
http://weblog.rubyonrails.com/2008/12/23/merb-gets-merged-into-rails-3
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Ruby ist eine Programmiersprache, die 1995 von dem Japaner Yukihiro Matsumoto veröffentlicht wurde. Sie wurde durch die Sprachen Perl, Eiffel, Ada, Smalltalk und Lisp inspiriert. Die herausragenden Eigenschaften von Ruby sind: