Sams Teach Yourself Perl in 21 Days, Second Edition

Day 10. Doing More with Regular Expressions

Yesterday, we explored the basics of regular expressions. You learned about the basic metacharacters and the ways you can use them to find patterns in strings. Today, in part two of our regular expression saga, we'll build on that background and explore other more complex ways in which regular expressions can be used. The things you'll learn about today include

• Extracting what was matched by a regular expression

• Notes on using patterns in scalar and list context

• Using patterns for search and replace

• More about using the split function

• Matching patterns over multiple lines