str_count {stringr} | R Documentation |
Vectorised over string
and pattern
, shorter
is recycled to same length as longest.
str_count(string, pattern)
string |
input vector. This must be an atomic vector, and will be coerced to a character vector |
pattern |
pattern to look for, as defined by a POSIX
regular expression. See the “Extended Regular
Expressions” section of |
integer vector
regexpr
which this function wraps
str_locate
/str_locate_all
to
locate position of matches
fruit <- c("apple", "banana", "pear", "pineapple") str_count(fruit, "a") str_count(fruit, "p") str_count(fruit, "e") str_count(fruit, c("a", "b", "p", "p"))