Subversion is a free/open-source version control system. That is, Subversion manages files and directories, and the changes made to them, over time. This allows you to recover older versions of your data, or examine the history of how your data changed. In this regard, many people think of a version control system as a sort of “time machine”. Subversion can operate across networks, which allows it to be used by people on different computers. At some level, [...]
Continue Reading HTML files consist of ordinary text with the addition of what are called tags. Tags, which represent the markup of the text, are special codes surrounded by pointy brackets. Most of the tags come in pairs and specify what is to be done with what is in between the starting and the ending tag. For example, an HTML document begins with <html> and ends with </html>. All pairs of tags have that same form: the ending tag has a slash [...]
Continue Reading Smarty is a template engine for PHP. More specifically, it facilitates a manageable way to separate application logic and content from its presentation. This is best described in a situation where the application programmer and the template designer play different roles, or in most cases are not the same person. For example, let’s say you are creating a web page that is displaying a newspaper article. The article headline, tagline, author and body are content elements, they contain no information [...]
Continue Reading What is a cascading Style Sheet? Let’s split the question in two: What are style sheets? and How do they cascade? I’ll answer the fi rst question now, and although I’ve hinted at the answer above, I’ll talk about the cascade later in the chapter. Bookmark on Delicious Digg this post Recommend on Facebook share via Reddit Share with Stumblers Tweet about it Subscribe to the comments on this post
Continue Reading 1. Deliver to multiple user agents. The same piece of marked-up content is readily deliverable in a wide variety of user agents, the collective name for devices that can read XHTML, such as browsers, handhelds like smartphones, cell phones with browsers, and screen readers that read text for the sight impaired. You simply create a different style sheet for each device type, or let the XHTML display as is. 2. Improve performance. Pages are much lighter (smaller in fi le [...]
Continue Reading Declare a DOCTYPE. The DOCTYPE goes before the opening html tag at the top of the page and tells the browser whether the page contains HTML, XHTML, or a mix of both, so that it can correctly interpret the markup. There are three main DOCTYPEs that let the browser know what kind of markup it is dealing with: Strict: All markup is XHTML-compliant. “http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd”> Transitional: This states that the markup is a mix of XHTML and deprecated HTML. Many well-established [...]
Continue Reading Androids resembles a human being both appearacne and behavior. Do you believe that such things are almost out in the wild and we never know that some of our friends are one. If you’ve ever seen an Android robot in the news, it probably came out of the Intelligent Robotics. Hiroshi Ishiguro a professor of the Department of Adaptive Machine System. The Androids he made are highly actuated giving them a human like facial expressions and reflexes. Because the AI [...]
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