ASP.NET Web PDF Document Viewer/Editor Control Library

After installation, the main RubyGems application, gem, should be in a directory that s included in your path (such as /usr/bin/ or /usr/local/bin/), and so should run immediately from the command line by typing gem and pressing Enter. If it does not, it will be necessary to find where gem is installed and add its directory to your path. Alternately, you could use gem in future by prefixing it with its full location (for example, /usr/bin/gem).

Note It s possible to install RubyGems in a local, user directory if you don t have permission to install

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At first, robin and scoundrel are both bound to the same dictionary. So when I assign None to scoundrel, the dictionary is still available through robin. But when I assign None to robin as well, the dictionary suddenly floats around in the memory of the computer with no name attached to it. There is no way I can retrieve it or use it, so the Python interpreter (in its infinite wisdom) simply deletes it. (This is called garbage collection.) Note that I could have used any value other than None as well. The dictionary would be just as gone. Another way of doing this is to use the del statement (which we used to delete sequence and dictionary elements in s 2 and 4, remember ). This not only removes a reference to an object, it also removes the name itself:

Many individuals and organizations use a relatively limited range of PowerPoint diagrams and charts to explain the information that relates to their work. Instead of formatting diagrams and charts from scratch every time, it s a good idea to design a single set of commonly used graphics that carry a clear and consistent design according to the best design principles. Whether you design the set of charts yourself or hire a professional information designer to help, standardizing the way you display quantitative information can both save you time formatting and ensure that you maintain the integrity of the data you display.

rubygems.org/.

One of the things it s useful to do is to get a list of the gems that are installed on your machine, as well as get a list of the gems available for download and installation. To do this, you use gem s list command. If you run gem list from your command line, you ll get a result similar to this:

To add a label to a graphic, on the Insert tab, in the Illustrations group, click Shapes, and then in the Callout group, select the style you want. After you add the label to the slide, you can modify it by adding text and adjusting the formatting as you would with any PowerPoint shape.

*** LOCAL GEMS *** sources (0.0.1) This package provides download sources for remote gem installation

>>> x = 1 >>> del x >>> x Traceback (most recent call last): File "<pyshell#255>", line 1, in x NameError: name 'x' is not defined This may seem easy, but it can actually be a bit tricky to understand at times. For instance, in the following example, x and y refer to the same list: >>> x = ["Hello", "world"] >>> y = x >>> y[1] = "Python" >>> x ['Hello', 'Python'] You might assume that by deleting x, you would also delete y, but that is not the case: >>> del x >>> y ['Hello', 'Python'] Why is this x and y referred to the same list, but deleting x didn t affect y at all. The reason for this is that you only delete the name, not the list itself (the value). In fact, there is no way to delete values in Python (and you don t really need to because the Python interpreter does it by itself whenever you don t use the value anymore).

It s not much, but it s a start. This list shows that you have the sources gem installed (version 0.0.1) and a basic description of the gem. You can query the remote gem server (currently hosted by RubyForge) like so:

Tip 9: Sketch It All, Live!