.NET/ASP.NET/C#/VB.NET PDF Document SDK

Regular expressions can also be contained within %r{ and }, like so:

%r{regular expression here}

The sort method is used to sort lists in place.3 Sorting in place means changing the original list so its elements are in sorted order, rather than simply returning a sorted copy of the list: >>> >>> >>> [1, x = [4, 6, 2, 1, 7, 9] x.sort() x 2, 4, 6, 7, 9]

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Regular expression syntax is reasonably standard between programming languages, and Ruby supports most of the standard POSIX regular expression syntax. Therefore, many examples of regular expressions you might find online are also likely to work within Ruby.

As you saw in 5, if you complete all three columns of Act II, you have enough Key Point, Explanation, and Detail slides to ll about a 45-minute presentation However, at the last minute, you might need to scale down your presentation from 45 minutes to 15 or even 5 minutes, and now you can practice how easy it is to do that with only a few clicks of the mouse Follow these steps in Slide Sorter view to scale the storyboard to time by hiding the slides that you don t need to use in the presentation: If you re giving a 45-minute presentation, do nothing all your slides will appear to your audience To prepare a 15-minute presentation, hold down the Ctrl key and click the white Detail slides throughout the presentation With all of the Detail slides selected, right-click any slide, and then select Hide Slide.

When using the forward-slash notation for regular expressions, you can set options for the regular expression by placing letters after the last forward slash, as follows: i: Makes the regular expression case insensitive. Therefore, /test/i matches positively against strings containing 'TEST', 'TeSt', 'tESt', 'test', or any other combination of lower- and upper case letters making up the word test. m: Puts the regular expression into multiline mode where the special character . (usually meaning any character except newline ) matches newlines. Therefore, /.*/m matches the whole of a multiline string, whereas /.*/ alone would only match the first line within that string. x: Makes the regular expression ignore whitespace. This allows you to format the regular expression in a more readable way without worrying about whitespace becoming part of the regular expression. For example, /t e s t/x matches against test. This option is particularly useful if you want to spread out your regular expression over multiple lines for easier reading.

Regular expressions can contain normal characters (such as letters or digits) and match against these, but you can use special characters to represent more abstract concepts such as any character or any digit. The following are some of the special characters that you can use in regular expressions or to create sub-expressions: .: Matches any character except the newline character. []: Matches a character range or set. See 3 for full details. (): Denotes a sub-expression. For example, (abc)+ matches 'abcabcabc'. |: Separates alternate choices. For example, t|x matches 't' or 'x'. \w: Matches any alphanumeric character or underscore. \W: Matches anything \w doesn t match. \b: Matches a word boundary (but not a specific character). \B: Matches anything \b doesn t match. \d: Matches digits (0 through 9).

Now only the Act I, Key Point, and Explanation slides will appear when you give the presentation; the Detail slides will be hidden You can see the result by pressing the F5 key to start the slide show from the rst slide Press the Esc key to return to Slide Sorter view To prepare a 5-minute presentation, complete the tasks for a 15-minute presentation, but in addition to selecting the white Detail slides, select the light gray Explanation slides, and then right-click any slide and select Hide Slide Now only the Act I and Key Point slides will appear during the presentation; the rest of the Act II slides are hidden Test the result by pressing the F5 key Press the Esc key to return to Slide Sorter view.