Match any of these characters exactly once.

Constructs a character class, sometimes called a character set. With this particular expression, you can tell the regex engine to match only one out of several characters. It does this by simply placing the characters you want to match between square brackets.

rx_any_of(.data = NULL, value)

Arguments

.data	Expression to append, typically pulled from the pipe %>%
value	Expression to optionally match

References

Character class: https://www.regular-expressions.info/charclass.html

Examples

rx_any_of(value = "abc")
#> [1] "[abc]"

# create an expression
x <- rx_any_of(value = "abc")

grepl(x, "c") # should be true
#> [1] TRUE
grepl(x, "d") # should be false
#> [1] FALSE

y <- rx() %>%
  rx_find("gr") %>%
  rx_any_of("ae") %>%
  rx_find("y")

regmatches("gray", regexec(y, "gray"))[[1]]
#> [1] "gray" "gr"   "y"   
regmatches("grey", regexec(y, "grey"))[[1]]
#> [1] "grey" "gr"   "y"