about_search: String Searching¶
Description¶
This man page explains how to perform string search-based operations in stringi.
Details¶
The following independent string searching engines are available in stringi.
stri_*_regex– ICU’s regular expressions (regexes), see about_search_regex,stri_*_fixed– locale-independent byte-wise pattern matching, see about_search_fixed,stri_*_coll– ICU’sStringSearch, locale-sensitive, Collator-based pattern search, useful for natural language processing tasks, see about_search_coll,stri_*_charclass– character classes search, e.g., Unicode General Categories or Binary Properties, see about_search_charclass,stri_*_boundaries– text boundary analysis, see about_search_boundaries
Each search engine is able to perform many search-based operations. These may include:
stri_detect_*- detect if a pattern occurs in a string, see, e.g., stri_detect,stri_count_*- count the number of pattern occurrences, see, e.g., stri_count,stri_locate_*- locate all, first, or last occurrences of a pattern, see, e.g., stri_locate,stri_extract_*- extract all, first, or last occurrences of a pattern, see, e.g., stri_extract and, in case of regexes, stri_match,stri_replace_*- replace all, first, or last occurrences of a pattern, see, e.g., stri_replace and also stri_trim,stri_split_*- split a string into chunks indicated by occurrences of a pattern, see, e.g., stri_split,stri_startswith_*andstri_endswith_*detect if a string starts or ends with a pattern match, see, e.g., stri_startswith,stri_subset_*- return a subset of a character vector with strings that match a given pattern, see, e.g., stri_subset.
See Also¶
Other text_boundaries: about_search_boundaries, stri_count_boundaries(), stri_extract_all_boundaries(), stri_locate_all_boundaries(), stri_opts_brkiter(), stri_split_boundaries(), stri_split_lines(), stri_trans_tolower(), stri_wrap()
Other search_regex: about_search_regex, stri_opts_regex()
Other search_fixed: about_search_fixed, stri_opts_fixed()
Other search_coll: about_search_coll, stri_opts_collator()
Other search_charclass: about_search_charclass, stri_trim_both()
Other search_detect: stri_detect(), stri_startswith()
Other search_count: stri_count_boundaries(), stri_count()
Other search_locate: stri_locate_all_boundaries(), stri_locate_all()
Other search_replace: stri_replace_all(), stri_trim_both()
Other search_split: stri_split_boundaries(), stri_split_lines(), stri_split()
Other search_subset: stri_subset()
Other search_extract: stri_extract_all_boundaries(), stri_extract_all(), stri_match_all()
Other stringi_general_topics: about_arguments, about_encoding, about_locale, about_search_boundaries, about_search_charclass, about_search_coll, about_search_fixed, about_search_regex, about_stringi