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Jekyll not working on OS X 10.9 Mavericks

Written by elmasse
Jul 02 2013

If you have installed the beta version of OS X Mavericks (10.9) and you try to run jekyll server command you will probably ending up having this error message:

$ jekyll server
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:777:in `report_activate_error': Could not find RubyGem jekyll (>= 0) (Gem::LoadError)
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:211:in `activate'
from /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/rubygems.rb:1056:in `gem'
from /usr/bin/jekyll:22

What's going on?

OS X 10.9 ships with Ruby 2.0 so, this is the list sort of step by step I did to get Jekyll back on track on my Mac:

Update gem

Run the following command:

$ sudo gem update --system

Download and install Xcode 5 and then open it!

Once you get XCode5 installed do not forget to open it so the command tools get installed.

Reinstall Jekyll, Pygmentize, Redcarpet, etc

Once I have everything updated I had to reinstall Jekyll and all the dependencies I have been using on my development site such as pigmentize, redcarpet, rdiscount, etc.

$ sudo gem install jekyll
$ sudo gem install redcarpet


I have searched a couple sites regarding this problem and it seems that there are other solutions such as stated in Tip: Ruby on OS X Mavericks which unfortunately didn't work for me.

Hope this helps if you run into the same problem.


Introducing CocktailJS

Written by elmasse
Apr 28 2013

CocktailJS is a small yet powerful library for NodeJS. It is mainly intended to explore some concepts in Javascript such as annotations, traits and talents.

CocktailJS Site


As I said the main idea is to explore some concepts. First, Annotations, they are intended to keep Objects and Classes more semantically and abstract the concepts of inheritance, and other mechanisms outside them. As in many other libraries for instance, extends is a method attached to each class. I wanted to move that outside. Yes, many other implement the extend mechanism as an util method - as node does - but I consider that is another problem. Utils are usually reflecting a language or design issue. But this is another story.
Another value added to annotations is they can be used not only when defining classes. In this way we can for instance, use annotations to declare Models without having to extend from a "framework base model".

Read more: Introducing CocktailJS


Ext.ux.Cover A Coverflow experience for Sencha Touch

Written by elmasse
Jul 14 2011

I was always interested in Coverflow. Now I want to announce my first draft for Sencha Touch. Ext.ux.Cover. It is based in Charles Ying's zFlow, if your are looking for a Coverflow like in js non-lib dependent for iOS, you should take a look at it!

Ext.ux.Cover works similar to Ext.List, you can add items to a store and show them in Cover using a itemTpl. Since Cover inherits from DataView, you get all the benefits in terms of modifying the store (add, remove, sort and filter). All the events will cause an immediate response in your Cover instance.

cover image

Some limitations

Due to the lack of support of css 3D animations (or bugs?) in Android, this implementation is only working for iOS devices. You can test it also in desktop, but keep in mind you should use Safari 5/ Chrome 12 (Chrome 12 in Ubuntu - do not know about other Linux distros - has no 3D neither, so it won't work).

I have successfully tested in Mac OS X 10.6.8 with Safari and iOS 4.3.2 iPhone and iPad.

Download it!

The code is already in my github repo so you can clone or fork the repo.

You can see it in action. Check the Demo Site

Future Tasks:

I will create a Wiki on github to explain how to use Ext.ux.Cover. Also, since this is in a experimental phase, you can find bugs. If so, please report them at github also. I will be working on Documentation too.


Ext.i18n.Bundle on GitHub

Written by elmasse
May 02 2011

I just created both projects (ExtJS and SenchaTouch Bundle) in my github repo. Now you can find'em at https://github.com/elmasse I will upload soon the previous versions also (ExtJS 2.x and 3.x) but right now you can download a working draft for ExtJS 4.

Please, feel free to download, fork, propose changes or whatever you want. You can also post bugs so we can track issues.

I will be working on documentation during the next weeks so we can get a wiki explaining how Bundle works.

Future plans are:

  • Upload CSS version
  • Create a new PlistReader so we can use this implementation with PhoneGap in iOS for .plist files
  • Test on PhoneGap
  • Documentation

Is CSS content Suitable for i18n?

Written by elmasse
Dec 13 2010
Internationalization (or i18n) is one of the worst features we have today on Web Application. I'm a big fan of Sencha and I have been reviewing their solution about i18n. I have also created my own solution a few years ago but, I came across both solutions have limitations and problems. Using a different js file with, let's call'em keys, you have to overwrite, for example, a Month name as Month.January so when you want to translate that into Spanish you just have to overwrite that key with
    Month.January = 'Enero'

The approach is excellent if you plan to keep that key as a pure variable, or you plan to reload the page in case you want to change the language. Now, what if I just want to change my language 'on the fly'. Ok, you could do that just adding those js files onto your document body or header, as scriptTagProxy does for example to load a new script. At this point everything will work ok. A common practice is to assign a key to somewhere or some property that is not used as a simple var. Let me explain this briefly. Assume we have a TabPanel with a few items on it, each one with its title as a key:
setupDemo = function(){
    //Bundle is declared global for this example
    Bundle = {title1: 'title One', title2: 'title Two'}; 

    new Ext.TabPanel({
        {title: Bundle.title1, html: '1'},{title: Bundle.title2, html: '2'},

Read more: Is CSS content Suitable for i18n?



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