Extract matched groups from a string.
Vectorised over string and pattern.
str_match(string, pattern) str_match_all(string, pattern)
string |
Input vector. Either a character vector, or something coercible to one. |
pattern |
Pattern to look for, as defined by an ICU regular expression. See stringi::stringi-search-regex for more details. |
For str_match, a character matrix. First column is the
complete match, followed by one column for each capture group.
For str_match_all, a list of character matrices.
str_extract() to extract the complete match,
stringi::stri_match() for the underlying
implementation.
strings <- c(" 219 733 8965", "329-293-8753 ", "banana", "595 794 7569",
"387 287 6718", "apple", "233.398.9187 ", "482 952 3315",
"239 923 8115 and 842 566 4692", "Work: 579-499-7527", "$1000",
"Home: 543.355.3679")
phone <- "([2-9][0-9]{2})[- .]([0-9]{3})[- .]([0-9]{4})"
str_extract(strings, phone)
str_match(strings, phone)
# Extract/match all
str_extract_all(strings, phone)
str_match_all(strings, phone)
x <- c("<a> <b>", "<a> <>", "<a>", "", NA)
str_match(x, "<(.*?)> <(.*?)>")
str_match_all(x, "<(.*?)>")
str_extract(x, "<.*?>")
str_extract_all(x, "<.*?>")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.