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Medium 9781847770806


Peter Scupham Carcanet Press Ltd. PDF
Medium 9780596004934

1. Word Under the Hood

Andrew Savikas O'Reilly Media ePub

Few consumer software packages are as malleable as Microsoft Wordit has to be malleable, to meet the unique needs of millions of users around the globe. However, many (perhaps most) Word users spend months, or even years, using Word "out of the box," without taking advantage of a single one of its limitless customization tools.

There's a palpable reluctance among long-time Word users to peek behind the curtain. They may curse the wretched Bullets and Numbering buttons 20 times a day or take 2 hours to manually change the font size of every heading in a lengthy report, but they will still not tear off the cover and start tinkering. For too long, they've been seduced by Word's supposed simplicity ("There must be a menu to fix this somewhere...").

If you're one of those users, this chapter will help you find your inner hacker. It asks you to choose the Red Pill and take a trip into Word's inner workings. You will also learn the very basics needed to start really hacking. For everyone else, consider it calisthenics for the rest of the book.

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Medium 9781576336380

Real Numbers: GED Arithmetic

Ace Academics Ace Academics ePub
Medium 9781604537123


Sarah Tieck Big Buddy Books PDF
Medium 9781491908693

20. Core Motion

Vandad Nahavandipoor O'Reilly Media ePub

iOS devices are usually equipped with accelerometer hardware. Some iOS devices might also include a gyroscope, such as the new iPhone and the new iPad. Before attempting to use either the accelerometer or the gyroscope in your iOS applications, you must check the availability of these sensors on the iOS device on which your app runs. Recipe 20.3 and Recipe 20.4 include techniques you can use to detect the availability of the accelerometer and gyroscope. With a gyroscope, iOS devices are able to detect motion in six axes.

Let’s go through a situation that will show you the value of the gyroscope. The accelerometer cannot detect the rotation of the device around its vertical axis if you are holding the device perfectly still in your hands, sitting in a computer chair, and rotating your chair in a clockwise or counterclockwise fashion. From the standpoint of the floor or the Earth, the device is rotating around the vertical axis, but it’s not rotating around its own y-axis which is the vertical center of the device. So, the accelerometer does not detect any motion.

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