stringi (version 0.2-5)

stri_count: Count the Number of Pattern Matches in a String

Description

A convenience function. Calls either stri_count_regex, stri_count_fixed, stri_count_coll, or stri_count_charclass, depending on the argument used.

Usage

stri_count(str, ..., regex, fixed, coll, charclass)

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

coll

character vector; canonically equivalent patterns

charclass

character vector; identifiers of character classes

Value

• Returns an integer vector.

Details

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

See Also

Other search_count: stri_count_charclass; stri_count_coll; stri_count_fixed; stri_count_regex; stringi-search

Examples

s <- "Lorem ipsum dolor sit amet, consectetur adipisicing elit."

if (stri_install_check(silent=TRUE))
stri_count(s, fixed=letters)

if (stri_install_check(silent=TRUE))
stri_count(s, regex="[[:alpha:]]")