stringi (version 1.2.4)

stri_opts_fixed: Generate a List with Fixed Pattern Search Engine's Settings

Description

A convenience function used to tune up the stri_*_fixed functions' behavior, see stringi-search-fixed.

Usage

stri_opts_fixed(case_insensitive = FALSE, overlap = FALSE, ...)

Arguments

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

Value

Returns a named list object.

Details

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.

References

C/POSIX Migration -- ICU User Guide, http://userguide.icu-project.org/posix#case_mappings

See Also

Other search_fixed: stringi-search-fixed, stringi-search

Examples

# NOT RUN {
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
# }