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  Python: calculate lighter/darker RGB colors

Many times color palettes have lighter and darker variations of the same color. This may be used to convey relative importance, or for something as simple as a gradient. Usually the designer will specify both colors. However, if you have a site that needs to allow user configurable styling, you may not want to ask the user for two variations of the same color. Here is some Python code to take a single color in RGB, and output an artitrarily lighter or darker variation of the same color...

   Python,RGC color,Calucaltion lighter/darker     2012-02-13 05:29:22

  ByteBuffer in Java

ByteBuffer is introduced in java.nio since Java 1.4. It provides a way of representing raw structured data such as from a file or from network. It enables fast access of underlying data compared to traditional ways like byte[] Prior to Java 1.4, if you want to represent a structured raw data, you need to create a byte[] and then having a set of checks to delimit the byte array to get the expected tokens. There are three ways to create a ByteBuffer: Wrapping an exiting array by calling ByteBuffe...

   JAVA,BYTEBUFFER,ALLOCATION     2015-07-08 03:17:44

  How to create offline HTML5 web apps in 5 easy steps

Among all cool new features introduced by HTML5, the possibility of caching web pages for offline use is definitely one of my favorites. Today, I’m glad to show you how you can create a page that will be available for offline browsing.Getting startedView DemoDownload files1 – Add HTML5 doctypeThe first thing to do is create a valid HTML5 document. The HTML5 doctype is easier to remember than ones used for xhtml:<!DOCTYPE html> <html> ... Create a file named index...

   Offline store,Steps,demo,Html5,Cache     2011-09-20 13:15:45

  Native Audio with HTML5

Once upon a time, audio on the web lived primarily in the world of third-party browser plug-ins like Flash, QuickTime and Silverlight. This was not a bad world, but it had its issues.For one, most plug-ins require the user to install them, but not all users are willing (or able) to install them. Also, many players built with these plug-ins are inaccessible, making it difficult for folks who use assistive technologies to access the audio or alternative content.Then there are the front-end design ...

   Audio,HTML5,Built in,Audio tag,Video     2011-10-13 13:04:07

  Siri in Practice

Some quick comments on using Siri in practice—for things other than asking it to open the pod bay doors. Siri’s voice recognition is very impressive, and the scope of what it understands is very good given the difficulty of what it’s doing. But it has a lot of trouble with certain sorts of names—Irish names, for example, which often are not written as pronounced. For example there are a lot of people in Ireland named “Aoife”—it’s a very popul...

   Siri,Apple,Practice,Artificial Intelligence,AI     2011-10-15 15:01:13

  What are some lesser known but useful Unix commands?

A few that come to mind, some less known, some more: xargs or parallel: run things in parallel, with lots of options sed and awk: more well-known but still super useful for processing text files, and faster than Python or Ruby m4: simple macro processor screen: powerful terminal multiplexing and session persistence yes: print a string a lot cal: nice calendar env: run a command (useful in scripts) look: find English words (or lines in a file) beginning with a string cut and paste and join: data...

   Linux,Unix,Command,Less used     2011-12-27 09:27:49

  Output a file with HTTP range header in PHP

When downloading a large file, we may encounter some network issues which causes download termination and only part of the file is downloaded. When the network connection resumes next time, we may need to redownload the file again from the beginning. In order to save bandwidth, http provides a Range parameter in its header which can control the file transfer flow. With the range parameter in the header, we can resume the download from where we stop. Here is a piece of PHP code snippet which uses...

   PHP, range,http, file transfer     2013-01-09 05:55:05

  Installing Python Packages

Now that you have you system and project environment all setup you probably want to start developing. But you likely don’t want to start writing an entire project fully from scratch, as you dive in you’ll quickly realize theres many tools helping you build projects and sites faster. For example making a request to a website there’s Requests, for handling processing images there’s Python Imaging Library, or for a full framework to help you in building a sit...

   Python,Package,Installation,Library,Unix     2011-11-02 12:57:45

  10 Web Design Elements that You Shouldn’t Overlook

When it comes to designing and building websites, it never seems to happen fast enough.Given this fast pace, many small details that are eventually required to build the website are often left out of the design process. While these details might be minor, they are what take a website from nice to truly awesome.These details are often easy to miss because they don’t drive the overall look and feel of the website. The problem is that as your development team works through the design, it wil...

   Web design,Verification,jQuery     2011-03-30 00:09:49

  The header element in HTML 5

Currently HTML5 is exciting and anyone who want to builds web pages is looking forward to implementing HTML5 new tags into their sites. Definitely HTML5 tags are very rich in functions that make life much easier for both webmasters and end users Within the HTML5 specfication we can see that there have been a significant number of new tags added, one of these the <header> element is what we’ll be covering here. We will talk about when to use it, when not to use it. As we ar...

   HTML5,Header     2012-05-03 09:12:58

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