grab function

Grab Regular Expressions from Dictionaries

convenience function to

grab(pattern, dictionary = getOption("regex.library"))

Arguments

• pattern: A character string starting with "@" that is a regular expression from a qdapRegex dictionary.
• dictionary: A dictionary of canned regular expressions to search within.

Returns

Returns a single string regular expression from one of the qdapRegex dictionaries.

Details

Many R regular expressions contain doubled backslashes that are not used in other regex interpreters. Using cat can remove backslash escapes (see Examples ) or URLencode

if using in a url.

Examples

grab("@rm_white")
## Not run:

## Throws an error
grab("@foo")
## End(Not run)

cat(grab("@pages2"))
## Not run:

cat(grab("@pages2"), file="clipboard")
## End(Not run)