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<hr>
Figure 6-3
<google>BUY_IOS8</google>
The left most of the two buttons is the quick look button which, when selected, will show a popup panel displaying the results. In this context it simply displays the “(20 times)” message again but, as will be shown later, becomes more useful when working with user interface views or graphics drawing code. The right-most button is the value history button which, when selected, displays the Playground Timeline Assistant panel. In this case, the timeline panel displays a graph plotting the result values generated within the loop:
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<td width="20%">[[Swift Data Types, Constants and VariablesTesting Apps on iOS 8 Devices with Xcode 6|Previous]]<td align="center">[[iOS 8 App Development Essentials|Table of Contents]]<td width="20%" align="right">[[Swift Operators and Expressions|Next]]</td>
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<td width="20%">Swift Data Types, Constants and VariablesTesting Apps on iOS 8 Devices with Xcode 6<td align="center"><td width="20%" align="right">Swift Operators and Expressions</td>
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