Detect the presence or absence of a pattern at the beginning or end of a string.
Vectorised over string and pattern.
str_starts(string, pattern, negate = FALSE) str_ends(string, pattern, negate = FALSE)
string |
Input vector. Either a character vector, or something coercible to one. |
pattern |
Pattern with which the string starts or ends. The default interpretation is a regular expression, as described in
stringi::stringi-search-regex. Control options with Match a fixed string (i.e. by comparing only bytes), using |
negate |
If |
A logical vector.
str_detect() which this function wraps when pattern is regex.
fruit <- c("apple", "banana", "pear", "pinapple")
str_starts(fruit, "p")
str_starts(fruit, "p", negate = TRUE)
str_ends(fruit, "e")
str_ends(fruit, "e", negate = TRUE)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.