Match alphabetic characters.

Source: R/special_characters.R

Matches letters (case insensitive) only.

rx_alpha(.data = NULL, inverse = FALSE)

Arguments

.data

Expression to append, typically pulled from the pipe %>%
inverse

Invert match behavior, defaults to FALSE (match alphabetic characters). Use TRUE to not match alphabetic characters.

Examples

rx_alpha()
#> [1] "[A-z]"
rx_alpha(inverse = TRUE)
#> [1] "[^A-z]"

# create an expression
x <- rx_alpha()

# create input
string <- "Apple 1!"

# extract match
regmatches(string, gregexpr(x, string))
#> [[1]]
#> [1] "A" "p" "p" "l" "e"
#>