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Tech Discovery

New tech, frameworks, languages. Precision math in Java. But you don't always get what you wish for. So, instead of 38.46, Java gave me back 38.4599999994. This is, obviously, not equal to 38.46. To make the equality work, I just used the very nice and friendly BigDecimal class from the java.math package, like this:. Add(BigDecimal.valueOf(18.47d) .doubleValue(). After this, I was the happy owner of a working addition on doubles. Alas, the boss was just bored of my solution (quote: "Just make it work!

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New tech, frameworks, languages. Precision math in Java. But you don't always get what you wish for. So, instead of 38.46, Java gave me back 38.4599999994. This is, obviously, not equal to 38.46. To make the equality work, I just used the very nice and friendly BigDecimal class from the java.math package, like this:. Add(BigDecimal.valueOf(18.47d) .doubleValue(). After this, I was the happy owner of a working addition on doubles. Alas, the boss was just bored of my solution (quote: Just make it work!

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Tech Discovery | za-tech-blog.blogspot.com Reviews

https://za-tech-blog.blogspot.com

New tech, frameworks, languages. Precision math in Java. But you don't always get what you wish for. So, instead of 38.46, Java gave me back 38.4599999994. This is, obviously, not equal to 38.46. To make the equality work, I just used the very nice and friendly BigDecimal class from the java.math package, like this:. Add(BigDecimal.valueOf(18.47d) .doubleValue(). After this, I was the happy owner of a working addition on doubles. Alas, the boss was just bored of my solution (quote: "Just make it work!

INTERNAL PAGES

za-tech-blog.blogspot.com

1

Tech Discovery: Python and URL retrieving

http://za-tech-blog.blogspot.com/2008/05/python-and-url-retrieving.html

New tech, frameworks, languages. Python and URL retrieving. I always like to use languages as simple tools for a purpose. I am not totally against any of the things going around in programming world. And I stumbled upon Python and urllib2, a module from Python that suits everybody's needs. As prerequisites, you need Python installed, but if using Linux it should be there already. I use DrPython as an editor, because I got used to it. But in Windows I just use the good old Scite. Pretty clear, right?

2

Tech Discovery: Blogging about code

http://za-tech-blog.blogspot.com/2008/05/blogging-about-code.html

New tech, frameworks, languages. When using the blogger platform I am really frustrated that it doesn't have anything for code formatting. Fortunately, I am not the only one with this issue. I found another blog with just a JS code for formatting. It looks fine to me. It just uses pre and code with some CSS to generate a readable box of code. The address of the blog is (pretty obvious :) :. Http:/ formatmysourcecode.blogspot.com/. Thanks for writing this. November 10, 2008 at 4:00 PM.

3

Tech Discovery: JPA and Oracle quirks

http://za-tech-blog.blogspot.com/2009/03/jpa-and-oracle-quirks.html

New tech, frameworks, languages. JPA and Oracle quirks. Recently, I started working on a JPA (I used Hibernate) with Oracle backend implementation. For some time it was fun, even if the JPA 1.0 implementation was not the best API I have ever seen. But, then, at some point the things got ugly. First thing, cascading stuff. JPA was limited. It would not delete orphan entities. Solution? Just resort to good old Hibernate. Just annotate the class with this and set the parent to null from the code:.

4

Tech Discovery: May 2007

http://za-tech-blog.blogspot.com/2007_05_01_archive.html

New tech, frameworks, languages. Groovy - part 1. First step: Installing Groovy. Http:/ groovy.codehaus.org/Tutorial 1 - Getting started. From this tutorial, I just added the GROOVY HOME env. variable, as the JAVA HOME was already there. And do not forget to download Groovy, before you do this :):. Http:/ groovy.codehaus.org/Download. After unzipping somewhere on your disk, try to make your life much easier and look for an IDE integration of Groovy. Try this link:. Package info.ursu.groove;. View my comp...

5

Tech Discovery: May 2009

http://za-tech-blog.blogspot.com/2009_05_01_archive.html

New tech, frameworks, languages. Today's piece of crappy code/design. Any database provider will implement at its own will the way they insert the records. Most of the time they will optimize this, especially for batch inserts. Going back to the design, thinking that the order of the inserts is the same as the order of the records inserted is a serious flaw. Subscribe to: Posts (Atom). Todays piece of crappy code/design. There was an error in this gadget. View my complete profile.

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za-tech-blog.blogspot.com

Tech Discovery

New tech, frameworks, languages. Precision math in Java. But you don't always get what you wish for. So, instead of 38.46, Java gave me back 38.4599999994. This is, obviously, not equal to 38.46. To make the equality work, I just used the very nice and friendly BigDecimal class from the java.math package, like this:. Add(BigDecimal.valueOf(18.47d) .doubleValue(). After this, I was the happy owner of a working addition on doubles. Alas, the boss was just bored of my solution (quote: "Just make it work!

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