.NET/Java PDF, Tiff, Barcode SDK Library

A great way to keep a fresh supply of creative visual ideas is by keeping a clipping le. Whenever you see an interesting layout, photograph, illustration, graph, or other visual idea in a newspaper, magazine, book, or other printed material, cut it out or copy it and place it in a folder in your le cabinet. Or for an electronic clip folder, create a folder in Microsoft Of ce OneNote 2007, and use the clipping tool to save an electronic image of the item. The next time you re stuck, refer to your paper or electronic le folders for creative inspiration.

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$debug_mode = 0 require $debug_mode == 0 "normal-classes" : "debug-classes"

broke_out = False for x in seq: do_something(x) if condition(x): broke_out = True break do_something_else(x) if not broke_out: print "I didn't break out!" A simpler way is to add an else clause to your loop it is only executed if you didn t call break. Let s reuse the example from the preceding section on break: from math import sqrt for n in range(99, 81, -1): root = sqrt(n) if root == int(root): print n break else: print "Didn't find it!" Notice that I changed the lower (exclusive) limit to 81 to test the else clause. If you run the program, it prints out Didn t find it! because (as you saw in the section on break) the largest square below 100 is 81. You can use continue, break, and else clauses both with for loops and while loops.

It s an obscure example, but what it does is check if the global variable $debug_mode is set to 0. If it is, it requires normal-classes.rb, and if not, debug-classes.rb. This gives you the power to include a different source file dependent on the value of a variable, ideal for situations where your application has regular and debug modes. You could even write an application that works perfectly, but then use a different require to include a whole different set of files that have new or experimental functionality. A commonly used shortcut uses arrays to quickly load a collection of libraries at once. For example:

Whatever photo you choose to add to a slide, you might nd that it doesn t t on the slide the way you want it to or that it is an inappropriate le size for a PowerPoint presentation. To x these problems, you ll need to apply the three most important techniques you ll use to work with photographs: sizing, cropping, and compressing. When you insert a photograph on the slide, it might ll only a portion of the screen, communicating only a portion of its visual potential. To increase its communicative power, resize the photo to ll the entire screen. To do that, click the photo. Round sizing handles will appear at each of the four corners of the photo drag one of them to enlarge the photo so that it lls the entire slide area. Be careful not to drag one of the square sizing handles that appear on the sides of the graphic, because dragging them will distort the photo as you resize it. You always want to preserve the image s original proportions so that your audience does not notice any distortion. Review the picture to make sure that it s crisp and clear at its current size. If it isn t, nd another image. Never use a photo that is unfocused, grainy, blurry, or otherwise unclear you ll distract from your message and diminish your visual credibility. People are used to seeing sharply focused photographs in professional media, and if you don t deliver the same in your slides, they ll think less of the presentation, no matter how good the story.

%w{file1 file2 file3 file4 file5}.each { |l| require l }

This loads five different external files or libraries with just two lines of code. However, some coders are not keen on this style, as it can make the code harder to read, even if it s more efficient.

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Code from files that are included into others with require and load has the same freedom as if the code were pasted directly into the original file. This means files that you include can call load and require themselves. For example, assume a.rb contains the following: