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Fix ignore case argument, closes #1455

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mine-cetinkaya-rundel 2023-05-09 23:02:42 -04:00
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regexps.qmd
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@ -187,7 +187,7 @@ That's because regular expressions are case sensitive.
There are three ways we could fix this: There are three ways we could fix this:
- Add the upper case vowels to the character class: `str_count(name, "[aeiouAEIOU]")`. - Add the upper case vowels to the character class: `str_count(name, "[aeiouAEIOU]")`.
- Tell the regular expression to ignore case: `str_count(regex(name, ignore_case = TRUE), "[aeiou]")`. We'll talk about more in @sec-flags. - Tell the regular expression to ignore case: `str_count(name, regex("[aeiou]", ignore_case = TRUE))`. We'll talk about more in @sec-flags.
- Use `str_to_lower()` to convert the names to lower case: `str_count(str_to_lower(name), "[aeiou]")`. - Use `str_to_lower()` to convert the names to lower case: `str_count(str_to_lower(name), "[aeiou]")`.
This variety of approaches is pretty typical when working with strings --- there are often multiple ways to reach your goal, either by making your pattern more complicated or by doing some preprocessing on your string. This variety of approaches is pretty typical when working with strings --- there are often multiple ways to reach your goal, either by making your pattern more complicated or by doing some preprocessing on your string.