ASP.NET PDF Viewer using C#, VB/NET

The reason why you can t just use . without the backslash in front is because . represents any character in a regular expression (as covered in 3), so it needs to be escaped with the backslash to identify itself as a literal full stop. This also explains why the question mark is escaped with a backslash, as a question mark in a regular expression usually means zero or one of the previous character also covered in 3. The ! is not escaped, as it has no other meaning in terms of regular expressions. The pipes (| characters) separate the three main characters, which means they re treated separately so that split can match one or another of them. This is what allows the split to split on periods, question marks, and exclamation marks all at the same time. You can test it like so:

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Paragraphs can also be split apart with regular expressions. Whereas paragraphs in a printed book, such as this one, tend not to have any spacing between them, paragraphs that are typed on a computer typically do, so you can split by a double newline (as represented by the special combination \n\n simply, two newlines in succession) to get the paragraphs separated. For example:

Note The dict function isn t really a function at all. It is a type, just like list, tuple, and str.

To unlock even more visual power from the magnifying glass in the last example, hide the headline, as shown on the lower-right slide in Figure 7-5. When the headline is not visible on the screen, you increase the audience s reliance on you to explain why you are showing this image. To sketch this slide, simply draw a line through the headline. Or go ahead and take care of this now: right-click the border of the title area, and on the shortcut menu, click White in the Font Color drop-down list to make the font color match the background of this slide. When you do this, the headline remains on the slide but is hidden from the view of the audience unless you change the font color to something that s visible. Even though the headline is hidden to the audience, when you re working on the slide in Normal view, you can select the text of the headline and it will become visible so that you can read it and con rm the point you want to make here. To use this hidden headline technique effectively, use Presenter view so that you can see the off-screen notes area attached to the slide, or otherwise become so familiar with the slide that the photo alone prompts your memory about what to say next.

text = %q{ This is a test of paragraph one. This is a test of paragraph two. This is a test of paragraph three. } puts text.split(/\n\n/).length

Let s add both these concepts to analyzer.rb:

Although you use a projector to show your slides on the screen, consider what paper can do for you too. Especially for an audience such as nancial executives who likely want to see detailed data, quickly establish credibility by handing out a printed detailed analysis when you display one of the Act I slides. Here you would say something like, We crunched the numbers and they re all here, but out of respect for your limited time, we ve pulled to the top what we thought would be most relevant to your situation, which will be the focus of this presentation. Your handout could be printed copies of your presentation in Notes Page view, Microsoft Of ce Excel spreadsheets, or whatever other format your data is in. If you like that idea, sketch a note on the slides where you plan to do that.

paragraph_count = text.split(/\n\n/).length puts "#{paragraph_count} paragraphs" sentence_count = text.split(/\.|\ |!/).length puts "#{sentence_count} sentences"

The final statistics required for your basic application are the average number of words per sentence, and the average number of sentences per paragraph. You already have the paragraph, sentence, and word counts available in the variables word_count, paragraph_count, and sentence_count, so only basic arithmetic is required, like so: