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For example, the following code does not create any variables of the enum TrafficLight type, but the members are accessible, and can be printed using WriteLine. static void Main() { Console.WriteLine("{0}", TrafficLight.Green); Console.WriteLine("{0}", TrafficLight.Yellow); Console.WriteLine("{0}", TrafficLight.Red); } Enum name Member name barcode 128 vb2008 generate, create barcode code 128 sample none in visual basic.net projects BusinessRefinery.com/code-128cusing barcode drawer for word document control to generate, create ecc200 image in word document applications. export BusinessRefinery.com/Data Matrix barcodeOne of the keys to creating great UI on the iPhone is taking a step back and thinking a bit about how users actually interact with the iPhone with their fingers. Yes, that s incredibly obvious, but something so obvious generally caries significance that few people take the time to explore. The finger is an incredibly efficient pointing device, far more efficient than the mouse. When the mouse was first introduced, it revolutionized human interaction with computers. I would argue that Apple s multitouch interface will, in time, prove to be even more revolutionary. A mouse manifests an unnatural disconnect between the motion of the user s hand and the action on screen. Most people these days have used a computer enough to be somewhat accustomed to the mouse, but if you watch someone use a computer for the first time, you ll see a definite learning curve to using a mouse! I ve even noticed a bit of a learning curve when using a new mouse or tracking settings with which I m unfamiliar. But the human finger, that s something just about every human being in the world is quite accustomed to using. We ve learned since birth how to control our fingers with an amazing level of precision and speed. Imagine if you were to attempt playing the piano with a mouse. Your tune would be choppy and unmusical at best. A touch-screen piano, however, would be playable, even if it didn t match a real piano for feel and accuracy. The more I thought about the finger as a means of interaction the more intrigued I was by how drastic the shift was from the mouse to multitouch. That s when it finally hit me. Taps are cheap! If the appropriate action is obvious to the user, the time actually required for that user to tap the proper spot on the screen is miniscule. Confusion about where to tap wastes far more time than an extra tap. Again, this conclusion may seem quite obvious. After all, ambiguity has been a challenge in all human computer interfaces, and reducing ambiguity has been one of the pillars of good interface design. But the iPhone is the first graphical computer interface where the speed and precision of the pointing device makes the physical action of pointing almost irrelevant when considering the time it takes to accomplish a specific result. Let that sink in for a minute taps are cheap. Understanding the finger as an input device is key in the process of making good interface decisions for the iPhone. Here s quick example: Let s say you are designing a simple yes/no questionnaire. Each participant will be asked a series of questions verbally and should respond by selecting yes or no. Some will be responding using a computer and mouse; others will be responding using an iPhone. To make the interface as intuitive as possible, you quickly decide that the Yes button should be green and the No button red (assuming a US audience and ignoring for a moment other cultural interpretations of color). Both buttons should have very easy-to-read text that is visually isolated from the background. Figure 1-12 shows what these buttons might look like on the iPhone (if you didn t hire a graphic artist). using barcode implement for asp.net webform control to generate, create data matrix barcodes image in asp.net webform applications. objective BusinessRefinery.com/2d Data Matrix barcode.net code 39 fontstyle Using Barcode decoder for classes VS .NET Control to read, scan read, scan image in VS .NET applications. BusinessRefinery.com/ANSI/AIM Code 39Figure 6-6. Constant fields act like static fields, but do not have a storage location in memory.
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