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Literal Characters and Metacharacters

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Your Turn

Write a regexp that can match tailtooltall, and toil

How can we match JocelynJocelin, and Joselyn but not Jozelyn using character sets?

a) Joscel[iy]n

b) Jo[sc^z]el[yi]n

c) Jo[sc]el[yi]n

Which of these regular expressions matches food at the beginning of a string?

a) ^food

b) food

c) $food

d) food^

Learn More

Gastón Sánchez has a nice book Handling Strings with R. Chapter 10 (Literal Characters) and Chapter 11 (Metacharacters) give an overview of these two concepts.

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