minor, shortening code lines for book formatting

Author: mattneub

bk2ch08p411individualCells/ch21p710addCellSubviewsInStoryboard/RootViewController.swift

@@ -24,7 +24,7 @@ class RootViewController : UITableViewController {
 
         let lab = cell.theLabel
         // prove that many rows does not mean many cell objects
-        lab.text = "This is row \(indexPath.row) of section \(indexPath.section)"
+        lab.text = "Row \(indexPath.row) of section \(indexPath.section)"
         if lab.tag != 999 {
             lab.tag = 999
             println("New cell \(++self.cells)")

bk2ch09p476popovers/ch22p751popovers/MyPopoverBackgroundView.swift

@@ -48,16 +48,16 @@ class MyPopoverBackgroundView : UIPopoverBackgroundView {
 
         let con = UIGraphicsGetCurrentContext()
         CGContextSaveGState(con)
-        var proposedX = self.arrowOffset
+        var propX = self.arrowOffset
         let limit : CGFloat = 22.0
         let maxX = rect.size.width/2.0 - limit
-        if proposedX > maxX {
-            proposedX = maxX
+        if propX > maxX {
+            propX = maxX
         }
-        if proposedX < limit {
-            proposedX = limit
+        if propX < limit {
+            propX = limit
         }
-        CGContextTranslateCTM(con, rect.size.width/2.0 + proposedX - Arrow.ARBASE/2.0, 0)
+        CGContextTranslateCTM(con, rect.size.width/2.0 + propX - Arrow.ARBASE/2.0, 0)
         CGContextMoveToPoint(con, 0, Arrow.ARHEIGHT)
         CGContextAddLineToPoint(con, Arrow.ARBASE / 2.0, 0)
         CGContextAddLineToPoint(con, Arrow.ARBASE, Arrow.ARHEIGHT)