Special character classes

Commonly used character classes with their own shortcut:

• \. matches any character apart from a newline.
• \d matches any digit.
• \D matches anything that isn’t a digit.
• \s matches any whitespace (e.g., space, tab, newline).
• \S matches anything that isn’t whitespace.
• \w matches any “word” character, i.e. letters and numbers.
• \W matches any “non-word” character.

x <- "abcd ABCD 12345 -!@#%."
str_view(x, "\\d+")

## [1] │ abcd ABCD <12345> -!@#%.

str_view(x, "\\D+")

## [1] │ <abcd ABCD >12345< -!@#%.>

str_view(x, "\\s+")

## [1] │ abcd< >ABCD< >12345< >-!@#%.

str_view(x, "\\S+")

## [1] │ <abcd> <ABCD> <12345> <-!@#%.>

str_view(x, "\\w+")

## [1] │ <abcd> <ABCD> <12345> -!@#%.

str_view(x, "\\W+")

## [1] │ abcd< >ABCD< >12345< -!@#%.>