rx_alpha {RVerbalExpressions}

Match alphabetic characters.

Description

Matches letters (case insensitive) only.

Usage

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()
rx_alpha(inverse = TRUE)

# create an expression
x <- rx_alpha()

# create input
string <- "Apple 1!"

# extract match
regmatches(string, gregexpr(x, string))