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Java | Conecto ergo sum.
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The One where I spent a morning because -0.5 turned to be parsed as 1/2


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This summer, I have been doing some amazing stuff for GeoGebra. First of all, I would like to thank two people: Miguel, my mentor, who guided me through all that really advanced mathematical stuff; and Heinz Kredel, JAS creator and developer, who answered all my questions and implemented my suggestions as quickly as I could …

Read moreThe One where I spent a morning because -0.5 turned to be parsed as 1/2

Status update for GeoGebra.


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My contributions for the first part of the first part of GSoC 2010 can be divided in two: general improvements and coding. General improvements I made a few general improvements on GeoGebra: Refactored build.dir in ant build file. Previously, build.dir wasn’t in the root directory. A few ant tasks were added, such compile-grammar, compile-oe (outside …

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Writing your own JRuby extension. Part II: Creating your first class.


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What’s the point of coding a JRuby extension if you don’t create classes? Well, I cannot think of any case, but if you find one, please, let me know. Do you remember Java’s classes hierarchy? If so, you’ll realize  that Java objects inherit from java.lang.Object by default but that is not actually what we need. …

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Writing your own JRuby extension. First problem.


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Maybe, when requiring your just created extension, you get a LoadError. If it is the first time you require it, it is quite likely that you have not followed JRuby requiring conventions. If you want to know how require works, you can find the best documentation ever about it in the comment before org.jruby.runtime.load.LoadService class. …

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Tweets del 29-02-2008


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Tutorial de Threads de Control http://www.programacion.net/java/tutorial/threads/ # Ventanas translúcidas y con forma en Java http://tinyurl.com/37aoqy #

Tweets del 18-02-2008


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JUnit 4.x en Eclipse http://www.vogella.de/articles/JUnit/article.html #


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