Word boundaries
BOUNDARY matches a word boundary.
whole_word wraps a regex in word boundary tokens to match a whole
word.
BOUNDARY NOT_BOUNDARY whole_word(x)
x |
A character vector. |
An object of class regex (inherits from character) of length 1.
A character vector representing part or all of a regular expression.
BOUNDARY
NOT_BOUNDARY
# Usage
x <- c("the catfish miaowed", "the tomcat miaowed", "the cat miaowed")
(rx_before <- BOUNDARY %R% "cat")
(rx_after <- "cat" %R% BOUNDARY)
(rx_whole_word <- whole_word("cat"))
stringi::stri_detect_regex(x, rx_before)
stringi::stri_detect_regex(x, rx_after)
stringi::stri_detect_regex(x, rx_whole_word)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.