stringr (version 0.3)

str_extract_all: Extract all pieces of a string that match a pattern.

Description

Extract all pieces of a string that match a pattern.

Usage

str_extract_all(string, pattern)

Arguments

string
input character vector
pattern
pattern to look for, as defined by a POSIX regular expression. See the ``Extended Regular Expressions'' section of regex for details.

Value

  • list of character vectors.

Details

Vectorised over string. pattern should be a single pattern, i.e. a character vector of length one.

See Also

str_extract to extract the first match

Examples

Run this code
shopping_list <- c("apples x4", "bag of flour", "bag of sugar", "milk x2")
str_extract_all(shopping_list, "[a-z]+")
str_extract_all(shopping_list, "\\b[a-z]+\\b")
str_extract_all(shopping_list, "\\d")

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