Beginning Regular Expressions (Programmer to Programmer) by Andrew Watt

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By Andrew Watt

* Supported by way of all significant databases, scripting languages, and programming languages, usual expressions are robust "wild-card" text-processing instruments utilized by programmers to discover, validate, alter, or edit details * masking a variety of languages and databases-including JavaScript, ASP.NET, and Access-this booklet will attract the various programmers get rid of by means of the Perl-Unix concentration of latest normal expressions books * choked with easy-to-follow examples and workouts, the ebook is helping common expressions beginners examine via doing

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Additional info for Beginning Regular Expressions (Programmer to Programmer)

Sample text

Forms on the Web accept text as input, which can be matched against allowable input. Business documents consist of text, and searches for specific sequences of characters can be made using regular expressions. E-mail messages consist of text. Developers’ code consists of text. And regular expressions can be beneficially used in many situations where text is used. Not only is text everywhere, but there also is lots of it, and increasingly, text must be updated or aggregated. As the volume of text created or to which you have access increases, you need efficient and effective ways to find text of particular interest or to change specific pieces of text.

Start right now building your points to allow you to start out on your very own Star Training holiday. Reach for the star. Training is valuable in its own right but the possibility of a free holiday adds a startling new dimension to the benefits of Star Training training. Don’t stare at that computer screen any longer. Start now with Star. Training is crucial to your company’s well-being. Think Star. It’s your first day, and you haven’t done anything like this before. So you open the document, open up Search and Replace in your favorite word processor, and elect to replace Star with Moon.

Org Writer, you expect to select all the occurrences when the beginning of a line, indicated by the ^ metacharacter, is followed by the exact sequence of characters a, n, and d (regardless of case of those characters). Org Writer. The regular expression selects the word and when it occurs at the beginning of a line (twice) and the first three characters of the word Andrew. The first three characters of Andrew are selected because the search is case insensitive. *, the sequences of characters shown in Figure 1-8 are selected.

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