O'Reilly Answers

By mike-loukides  | Yesterday, 11:42 AM | 0 Replies

These tips on battery life were written with Android in mind, but they apply to most smart phones. Keep wifi off unless you need it. This is admittedly a pain. But wifi makes a big difference.If that...

By chco  | Yesterday, 08:42 AM | 0 Replies

This O'Reilly Answers screencast will show you how to map your network or drive shares to a drive letter so you can access them quickly. The content in this screencast is from Windows 7: The Missi...

By chco  | Yesterday, 06:56 AM | 0 Replies

Sometimes, you know that there is content inside the main XML document that you would like to use for another purpose. The most common alternative purpose is something like making a list of figures or...

By macslocum  | Yesterday, 05:35 AM | 0 Replies

The luxury of being just a designer or just a programmer is largely a relic days long gone. It's now common for designers to tab out of the Adobe suite and pop the hood on code, and programmers need a...

By chco  | 17 October 2010 - 11:21 AM | 0 Replies

Below we have an excerpt from Enterprise JavaBeans 3.1, Sixth Edition. It gives a guide for coding an EJB (Enterprise JavaBean).For this exercise we’ll make a simple SLSB, a Calculator Service, to i...

By Maximiliano Firtman  | 03 September 2010 - 11:12 AM | 1 Reply

The following is an excerpt from my book, Programming the Mobile Web.XHTML MP is based on the W3C’s XHTML Basic, and they are almost the same. The W3C has an online mobile validator at https://valida...

By chco  | 14 October 2010 - 05:57 PM | 0 Replies

In this excerpt from Hadoop: The Definitive Guide, Second Edition, we look at how MapReduce in Hadoop works in detail. This knowledge provides a good foundation for writing more advanced MapReduce pro...

By chco  | 14 October 2010 - 03:39 AM | 0 Replies

The following excerpt from REST in Practice describes how to build a RESTful service that use hypermedia to model state transitions and describe business protocols. This particular example models the...

By Chuck Bell  | 13 October 2010 - 01:11 PM | 0 Replies

If you need to include additional columns on the slave that the master doesn’t have—for example, to record timestamps or add routing or other localized data—you can add columns to a table on a s...

By blackbear  | 21 June 2010 - 05:56 AM | 6 Replies

One of the more useful (from a developer standpoint) features coming in iOS 4 (formerly iPhone OS 4) is the UIAutomation tool. This lets you run an automated set of tests against an application, and ...

By chco  | 12 October 2010 - 06:57 PM | 0 Replies

In the following excerpt from Javascript Patterns the author speaks to the use of object literals, their proper application, and offers a few examples. When you think about objects in Ja...

By BrianSawyer  | 09 June 2010 - 12:17 PM | 4 Replies

When working on Best Android Apps, we wanted to test as many apps on as many different devices as we possibly could. Now that the book is in print, we're adding new apps, updates, tips and tricks,...

By chco  | 11 October 2010 - 06:57 PM | 0 Replies

If you have a number of XML documents, all based on the same tags, you can make them look completely different just by using a different style mapping and page layout. The following excerpt from XML P...

By mike-loukides  | 26 October 2009 - 12:36 PM | 2 Replies

Given a longitude and a latitude, what's the great circle distance between them? The formula for this computation, and many others, is available at the Aviation Formulary, by Ed Williams: QuoteT...

By Maximiliano Firtman  | 11 October 2010 - 11:06 AM | 0 Replies

Remember: most mobile devices are also phones! So, why not create link-to-call actions? If you’re creating a business guide, or even for your own unique phonebook, most people will prefer to cal...

By chco  | 10 October 2010 - 06:07 PM | 0 Replies

The following excerpt from Javascript Patterns explains the different ways to use for loops in Javascript and recommends the best pattern to optimize your code.In for loops you ite...