Mention quantifier term

Fixes #898
2021-04-18 08:57:24 -05:00 · 2021-04-18 08:57:24 -05:00 · 47585ee920
parent 3abea6ba61
commit 47585ee920
1 changed files with 3 additions and 1 deletions
--- a/strings.Rmd
+++ b/strings.Rmd
@ -373,7 +373,7 @@ str_view(c("grey", "gray"), "gr(e|a)y")

 5.  Create a regular expression that will match telephone numbers as commonly written in your country.

-### Repetition
+### Repetition / Quantifiers

 The next step up in power involves controlling how many times a pattern matches:

@ -414,6 +414,8 @@ str_view(x, 'C{2,3}?')
 str_view(x, 'C[LX]+?')
 ```

+Collectively, these operators are called **quantifiers** because they quantify how many times a match can occur.
+
 #### Exercises

 1.  Describe the equivalents of `?`, `+`, `*` in `{m,n}` form.