gistfile1.m

    // HACK: Create an offscreen text view solely for calculating the height of table view cells
    // containing text views. This bizarre hack is needed because:
    //
    // a.) UITextView is bizarre and uses WebKit instead of UIKit's methods for displaying strings,
    //     and NSString's sizeWithFont:constrainedToSize: does not calculate the height exactly as
    //     it does. (For instance, the height of strings with trailing whitespace are calculated
    //     differently, and UITextView some strange built-in padding and slightly
    //     different-than-usual line height that is annoyingly difficult to replicate, etc...,
    //     etc...).
    //
    // b.) If a UITextView has not been added to a view heirarchy, its contentSize property will...
    //     always... just be equal to the frame. In addition, desperately attempting to add it as a
    //     subview of another UIView, or even a UIWindow, which is also not a part of a parent's
    //     heirarchy does not seem to fix this, which means we have to sadly break separation of
    //     concerns and stuff it in here.