ASP.NET Web PDF Document Viewer/Editor Control Library

An even more concise way of getting directory listings is by using Dir s class array method:

Dir["/usr/bin/*"]

["/usr/bin/a2p", "/usr/bin/aclocal", "/usr/bin/aclocal-1.6", "/usr/bin/addftinfo", "/usr/bin/afmtodit", "/usr/bin/alias", "/usr/bin/amlint", "/usr/bin/ant", ...items removed for brevity...]

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heading to Lesson if you want. Often the biggest challenge for educators when completing Act II is not completing the Explanation and Detail slides, because those usually already exist in some form. Rather the dif culty comes in distilling the Explanation and Detail columns into an even simpler set of three Key Point (Lesson) headlines. It is essential that you provide students with only a few Key Point headlines that they will certainly remember, which then will serve as long-term memory reference points to access your Explanation and Detail headlines. In this example, as you write your Key Point (Lesson) headlines, you ll cover the three most important points that you want your students to remember from the class: Key Point 1 Assemble the theory. Key Point 2 Assemble the research. Key Point 3 Apply what you know. Continue by completing the other two columns of the story template, and then create your Act II slides from these according to the process described in the other examples in this chapter.

In this case, each entry is returned as an absolute filename, making it easy to use the File class s methods to perform checks upon each entry if you wished. You could take this process a step further and be a little more platform independent:

(5, 6, 7) {'foo': 1, 'bar': 2} >>> print_params_4(1, 2) 1 2 3 () {} By combining all these techniques, you can do quite a lot. If you wonder how some combination might work (or whether it s allowed), just try it! (In the next section, you see how * and ** can be used at the point of call as well, regardless of whether they were used in the function definition.) Now, back to the original problem: how you can use this in the name-storing example. The solution is shown here: def store(data, *full_names): for full_name in full_names: names = full_name.split() if len(names) == 2: names.insert(1, '') labels = 'first', 'middle', 'last' for label, name in zip(labels, names): people = lookup(data, label, name) if people: people.append(full_name) else: data[label][name] = [full_name] Using this function is just as easy as using the previous version, which only accepted one name: >>> d = {} >>> init(d) >>> store(d, 'Han Solo') But now you can also do this: >>> store(d, 'Luke Skywalker', 'Anakin Skywalker') >>> lookup(d, 'last', 'Skywalker') ['Luke Skywalker', 'Anakin Skywalker']

Dir[File.join(File::SEPARATOR, 'usr', 'bin', '*')]

To visually realize your puzzle motif from the story template and storyboard sketches, in Normal view of any slide, select the Insert tab, and in the Illustrations group, click Clip Art. In the Clip Art pane, type the search term puzzle, and then click Go. When you nd the puzzle shape you want, position the mouse pointer on it, click the arrow to the right of the puzzle piece, and choose Insert, as shown in Figure 9-28.

Note Of course, only Unix systems have /usr/bin directories, so this technique is moot in this instance,

Creating a Directory You use Dir.mkdir to create directories, like so:

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Dir.mkdir("mynewdir")

Now you ve learned about gathering up parameters in tuples and dictionaries, but it is in fact possible to do the opposite as well, with the same two operators, * and **. What might the opposite of parameter gathering be Let s say we have the following function available: def add(x, y): return x + y

Once the directory has been created you can navigate to it with Dir.chdir. You can also specify absolute paths to create directories under other specific directories: