Stringi is THE R package for fast, correct, consistent and convenient string/text processing in each locale and any native character encoding
An R package for string manipulation.
"Stringr is newer based on stringi internally and is often even faster"
from question "How to speed up this string split operation within data.table"
"Stringr provides more human-readable wrappers around the base r functions though as of dec 2014 the development version has a branch built on top of stringi mentioned below"
from question "How to remove all whitespace from a string?"