Simple .NET/ASP.NET PDF document editor web control SDK

When determining which classes you need and what methods they should have, you may try something like this: 1. Write down a description of your problem (what should the program do ). Underline all the nouns, verbs, and adjectives. 2. Go through the nouns, looking for potential classes. 3. Go through the verbs, looking for potential methods. 4. Go through the adjectives, looking for potential attributes. 5. Allocate methods and attributes to your classes. Now you have a first sketch of an object-oriented model. You may also want to think about what relationships (such as inheritance) the classes and objects will have. To refine your model, you can do the following: 6. Write down (or dream up) a set of use cases scenarios of how your program may be used. Try to cover all the functionality. 7. Think through every use case step by step, making sure that everything you need is covered by your model. If something is missing, add it. If something isn t quite right, change it. Continue until you are satisfied. When you have a model you think will work, you can start hacking away. Chances are you ll have to revise your model or revise parts of your program. Luckily, that s easy in Python, so don t worry about it. Just dive in. (If you d like some more guidance in the ways of objectoriented programming, check out the list of suggested books in 19.)

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By viewing your slides in Notes Page view like the frames in a lmstrip, you align your approach with the dual channels the information that is presented to the visual channel is in the on-screen slide area, and the information presented to the verbal channel is in the off-screen text box. This approach also creates a well-balanced handout that you can print in Notes Page format, as shown in Figure 2-14. By using PowerPoint this way, you ensure that you produce both an effective live presentation and an effective printed document.

app/helpers/application_helper.rb test/test_helper.rb config/database.yml config/routes.rb public/.htaccess config/boot.rb config/environment.rb config/environments/production.rb config/environments/development.rb config/environments/test.rb script/about script/breakpointer script/console script/destroy script/generate script/performance/benchmarker script/performance/profiler script/process/reaper script/process/spawner script/runner script/server script/plugin public/dispatch.rb public/dispatch.cgi public/dispatch.fcgi public/404.html public/500.html public/index.html public/favicon.ico public/robots.txt public/images/rails.png public/javascripts/prototype.js public/javascripts/effects.js public/javascripts/dragdrop.js public/javascripts/controls.js public/javascripts/application.js doc/README_FOR_APP log/server.log log/production.log log/development.log log/test.log

A lot of files and directories are produced, but don t feel overwhelmed! You won t even use many of them in this chapter, as they are for more advanced uses that aren t relevant to basic Web application development. In most cases, Rails provides sane defaults anyway, so you don t need to change a lot of files unless you re doing something special. However, you ll explore what many of these directories are for in the following section.

It is no accident that the structure of a lmstrip is conspicuously similar to the dual-channels concept. When you watch a lm with sound, your mind coordinates the different information from the soundtrack and the visual frames on screen. Filmmakers have managed to communicate complex ideas to audiences around the world with synchronized images and sound for almost a century, with little if any text on the screen. Likewise, working memory can easily coordinate visual and verbal channels if they are properly coordinated and presented. With the screen behind the speaker, the audience sees and quickly digests the slide and then pays attention to the speaker and his or her verbal explanation. The entire experience appears seamless to the audience. Using the off-screen notes area in Notes Page view also takes into account the fact that the speaker has a voice during a presentation, which offers a critical source of information that has to be planned and integrated into the experience. BBP fundamentally changes the media model for PowerPoint from paper to a lmstrip. But the difference between a lmstrip and the BBP approach is pacing. In lm and television, you commonly view 24 to 60 frames per second. A BBP presentation runs at the speed of conversation about one frame per minute allowing time for the audience to digest the new information and then focus next on the presenter. This even and appropriate pacing ensures that your audience experiences only the right things at the right times.

Note The exact file and directory structure might vary on your system depending on what version of