stri_extract: Extract Pattern Matches

In stringi: THE string processing package for R

Description

A convenience function. Calls either stri_extract_all, stri_extract_first, or stri_extract_last, depending on the argument used. Note that this is slower than the direct call.

Usage

stri_extract(str, ..., regex, fixed, charclass, mode = c("first", "all",
  "last"))

Arguments

str	character vector of strings to search in
...	additional arguments passed to the underlying functions
regex	character vector; regular expressions
fixed	character vector; fixed patterns
charclass	character vector; identifiers of character classes
mode	single string; whether to look for all, or only the first/last occurrence of the pattern

Details

Unless you are very lazy, please call the underlying functions directly for better performance.

Value

The return value is the same as the underlying functions called, i.e. a character vector or a list of character vectors.

See Also

Other search_extract: stri_extract_all_charclass, stri_extract_all_charclass, stri_extract_first_charclass, stri_extract_first_charclass, stri_extract_last_charclass, stri_extract_last_charclass; stri_extract_all_fixed, stri_extract_all_fixed,, stri_extract_first_fixed, stri_extract_first_fixed,, stri_extract_last_fixed, stri_extract_last_fixed; stri_extract_all_regex, stri_extract_all_regex, stri_extract_first_regex, stri_extract_first_regex, stri_extract_last_regex, stri_extract_last_regex; stri_extract_all; stri_extract_first; stri_extract_last; stringi-search

stringi documentation built on May 2, 2019, 4:54 p.m.