Performing Pattern Matching with Perl Regular Expressions
A Brief Overview
Perl regular expressions
enable you to perform pattern matching by using functions. A regular
expression is a sequence of strings that defines a search
pattern.
For example, suppose
you have the Certadv.NANumbr data set, which contains phone numbers
for the United States, Canada, and Mexico.
Figure 14.3 Certadv.NaNumbr Data Set (partial output)
By using a regular expression, you can find valid values for Phone. The advantage of using regular expressions is that you can often accomplish in only one Perl regular expression function something that would require a combination ...
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