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Your Turn

Match the following regular expressions against the test vector below using str_detect. Can you explain the matches?

Regular expressions

  1. ^dog

  2. ^[a-z]+$

  3. \\d

test_vector <- c("Those dogs are small.","dogs and cats",

Learn More

To learn more about the stringr package, check out the documentation website. There is also a stringr cheatsheet. You also might check out Chapter 14 of R for Data Science as well as this blog post by Hugo Toscano on working with strings in R.

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