| stri_opts_fixed {stringi} | R Documentation |
A convenience function used to tune up the stri_*_fixed functions'
behavior, see stringi-search-fixed.
stri_opts_fixed(case_insensitive = FALSE, overlap = FALSE, ...)
case_insensitive |
logical; enable simple case insensitive matching |
overlap |
logical; enable overlapping matches detection in certain functions |
... |
any other arguments to this function are purposely ignored |
Case-insensitive matching uses a simple, single-code point case mapping
(via ICU's u_toupper() function).
Full case mappings should be used whenever possible because they produce
better results by working on whole strings. They take into account
the string context and the language and can map to a result string with
a different length as appropriate, see stringi-search-coll.
Searching for overlapping pattern matches works in case of the
stri_extract_all_fixed, stri_locate_all_fixed,
and stri_count_fixed functions.
Returns a named list object.
C/POSIX Migration – ICU User Guide, http://userguide.icu-project.org/posix#case_mappings
Other search_fixed: stringi-search-fixed,
stringi-search
stri_detect_fixed("ala", "ALA") # case-sensitive by default
stri_detect_fixed("ala", "ALA", opts_fixed=stri_opts_fixed(case_insensitive=TRUE))
stri_detect_fixed("ala", "ALA", case_insensitive=TRUE) # equivalent