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

In this example you define two hot words that you want to find within sentences, and you look through the sentences in my_string for any that contain either of your hot words. The way you do this is by seeing if, for any of the words in the sentence, it s true that the hot_words array also contains that word. Experienced readers will wonder if regular expressions could be used in this situation. They could, but the focus here is on clean list logic that s easy to extend and adjust. You also get the benefit, if you wish, to use the difference in lengths between the word array, and the word array with hot words removed, to rank sentences in the order of which match the most hot words. This could be useful if you decided to tweak your bot (or any other software using WordPlay) to pick out and process the most important sentence, rather than just the first one. For example:

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Normally when you create a text slide in PowerPoint with the standard bullet point approach, you rst start in Normal view, as shown on the left in Figure 2-1, where you click to add a title to the title area and then click to add text in the content area below. If you have more to say verbally about the slide but can t t the extra words in the content area, you might be one of a few people to visit Notes Page view, shown in the middle in Figure 2-1, where you can see the slide area at the top and an adjacent text box in the notes area at the bottom that does not appear on screen during a presentation. And after you ve created your slides, you might visit Slide Sorter view, shown on the right, to take a look at all of your slides together as small thumbnails.

Note The form of polymorphism discussed here, which is so central to the Python way of programming,

def self.best_sentence(sentences, desired_words) ranked_sentences = sentences.sort_by do |s| s.words.length (s.downcase.words desired_words).length end ranked_sentences.last end

This class method accepts an array of sentences and an array of desired words as arguments. Next it sorts the sentences by how many words difference each sentence has with the desired words list. If the difference is high, then there must be many desired words in that sentence. At the end of best_sentence, the sentence with the biggest number of matching words is returned.

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Switching pronouns is when you swap you and I, I and you, my and your, and your and my. This simple change makes sentences easy to use as a response. Consider

what happens if you simply reflect back whatever the user says by switching the pronouns in his or her input. Some examples are shown in the following table: Input

Encapsulation is the principle of hiding unnecessary details from the rest of the world. This may sound like polymorphism there, too, you use an object without knowing its inner details. The two concepts are similar because they are both principles of abstraction they both help you deal with the components of your program without caring about unnecessary detail, just like functions do. But encapsulation isn t the same as polymorphism. Polymorphism enables you to call the methods of an object without knowing its class (type of object). Encapsulation enables you to use the object without worrying about how it s constructed. Does it still sound similar Let s construct an example with polymorphism, but without encapsulation. Assume that you have a class called OpenObject (you learn how to create classes later in this chapter): >>> o = OpenObject() # This is how we create objects... >>> o.setName('Sir Lancelot') >>> o.getName() 'Sir Lancelot' You create an object (by calling the class as if it were a function) and bind the variable o to it. You can then use the methods setName and getName (assuming that they are methods that are supported by the class OpenObject). Everything seems to be working perfectly. However, let s assume that o stores its name in the global variable globalName: >>> globalName

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