regmatches_

regmatches_first

Logical indicating whether to drop empty matches. Defaults to FALSE.

drop

Other args (like ignore.case) passed to gregexpr

A wrapper around the base function combo of gregexpr and regmatches

A collection of useful tools for programming and writing-scripts.
Several functions are simple wrappers around base R functions that extend
their functionality while also providing some convenient properties<e2><80><93>regular
expression functions that automatically detect look-ahead and look-behind
statements, a read-line function that suppresses incomplete-final-line
warnings and automatically opens and closes connections, a version of
substrings that starts from the end of strings, etc. Other functions are
useful for checking whether packages are installed, omitting
missing data, and showing in-use connections.

regmatches_: extract reg expr matches

Description

Usage

Arguments

Value