ASP.NET Web PDF Document Viewer/Editor Control Library

Does your storyboard: Include backgrounds that cue the Key Point, Explanation, and Detail slides Provide you with the ability to quickly scale your presentation up and down to time Contain notes in the notes area of what you ll say during each slide

age = 10 puts "You are a " + (age < 18 "child" : "adult")

Sometimes it s desirable to make several comparisons with the same variable at the same time. You could do this with the if statement, as covered previously:

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Your storyboard is a versatile tool to prepare and plan both your spoken words and your projected visuals during the presentation. Once you ve mastered the basics, try using these 10 tips to enhance the storyboard.

fruit color color color = = = = "orange" "orange" if fruit == "orange" "green" if fruit == "apple" "yellow" if fruit == "banana"

price_width = 10 item_width = width - price_width header_format = '%-*s%*s' format = '%-*s%*.2f' print '=' * width print header_format % (item_width, 'Item', price_width, 'Price') print '-' * width print print print print print format format format format format % % % % % (item_width, (item_width, (item_width, (item_width, (item_width, 'Apples', price_width, 0.4) 'Pears', price_width, 0.5) 'Cantaloupes', price_width, 1.92) 'Dried Apricots (16 oz.)', price_width, 8) 'Prunes (4 lbs.)', price_width, 12)

If you want to use else to assign something different if fruit is not equal to either orange, apple, or banana, it will quickly get messy, as you d need to create an if block to check for the presence of any of these words, and then perform the same comparisons as earlier. An alternative is to use elsif, meaning else if :

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fruit = "orange" if fruit == "orange" color = "orange" elsif fruit == "apple" color = "green" elsif fruit == "banana" color = "yellow" else color = "unknown" end elsif blocks act somewhat like else blocks, except that you can specify a whole new comparison expression to be performed, and if none of those match, you can specify a regular else block to be executed.

A variant of this technique is to use a case block. Our preceding example, with a case block, becomes the following:

print '=' * width The following is a sample run of the program: Please enter width: 35 =================================== Item Price Apples 0.40 Pears 0.50 Cantaloupes 1.92 Dried Apricots (16 oz.) 8.00 Prunes (4 lbs.) 12.00 ===================================

If for some reason you decide not to use the BBP Storyboard Formatter, follow these steps to set up the basic formatting you ll need to start sketching the storyboard:

fruit = "orange" case fruit when "orange" color = "orange" when "apple" color = "green" when "banana" color = "yellow" else color = "unknown" end

This code is similar to the if block, except that the syntax is a lot cleaner. A case block works by processing an expression first, and then by finding a contained when block that matches the result of that expression. If no matching when block is found, then the else block within the case block is executed instead. case has another trick up its sleeve. As all Ruby expressions return a result, you can make the previous example even shorter: