ASP.NET Web PDF Document Viewer/Editor Control Library

For a quick illustration, consider sketching a screen capture. Almost anything that can be viewed on a computer screen can be captured and displayed on a slide, including pictures of your desktop, Web pages, documents, and more. The sketch on the lower-right slide in Figure 7-21 includes a screen capture of an e-mail message to illustrate a type of communication. Another good use of a screen capture is to convey more detailed quantitative information available in other documents. For example, each dollar amount or other

winforms pdf 417 reader, winforms qr code reader, winforms upc-a reader, winforms data matrix reader, winforms ean 128 reader, winforms ean 13 reader, c# remove text from pdf, replace text in pdf using itextsharp in c#, winforms code 39 reader, itextsharp remove text from pdf c#,

Note A side benefit of this approach is also that you can perform checks on the data before assigning it

In the example from the previous section, if you enter a name that ends with Gumby, the method name.endswith returns True, making the if statement enter the block, and the greeting is printed. If you want, you can add an alternative, with the else clause (called a clause because it isn t really a separate statement, just a part of the if statement):

to the object variables. For example, in the set_first_name and set_last_name methods, you could check that the names contain enough characters to be considered valid names. If not, you can then raise an error.

7

The code appears to work fine:

However, it appears you still have some problems:

piece of quantitative information included in a headline is likely derived from an Of ce Excel spreadsheet or another data source that re ects the detailed analysis that produced it. You could probably spend an hour discussing the details of any single gure, but if you did that, you wouldn t have time to cover any of the other points in the presentation. Instead, sketch a screen capture of a close-up of a spreadsheet on a slide, and when you display the slide, explain that the detailed data is contained there. Sketch a note on the slide that you will also bring printouts of the spreadsheet providing the detailed nancial analysis and explanation that back up the headline. Now the headline communicates the main idea that you want to get across, the tightly cropped screen capture of the spreadsheet indicates that you can back up your point, your verbal explanation conveys what you intend, and you have backup in the printouts.

name = raw_input('What is your name ') if name.endswith('Gumby'): print 'Hello, Mr. Gumby' else: print 'Hello, stranger' Here, if the first block isn t executed (because the condition evaluated to false), you enter the second block instead. This really makes you see how easy it is to read Python code, doesn t it Just read the code aloud (from if) and it sounds just like a normal (or perhaps not quite normal) sentence.

Uh-oh! You wanted to abstract the first name/last name requirement and only allow full names to be set or retrieved. However, the set_first_name and set_last_name are still public and you can use them directly from any code where you have Person objects. Luckily, encapsulation lets you solve the problem:

def name @first_name + ' ' + @last_name end private def set_name(name) first_name, last_name = name.split(/\s+/) set_first_name(first_name) set_last_name(last_name) end def set_first_name(name) @first_name = name end def set_last_name(name) @last_name = name end end

MY DIAGRAM DOESN T FIT!

The only difference to the Person class from the first time you created it is that the keyword private has been added. What private does is tell Ruby that any methods declared in this class from there on should be kept private. This means that only code within the object s methods can access those private methods, whereas code outside of the class cannot. For example, this code no longer works:

p = Person.new("Fred Bloggs") p.set_last_name("Smith")