There are some things that I wish were easier with the stringr or stringi packages. The foremost of these is the extraction of numbers from strings. stringr lets you figure this out the regex for yourself; strex takes care of this for you. There are many more useful functionalities in strex. In particular, there’s a match_arg() function which is more flexible than the base match.arg(). Contributions to this package are encouraged: it is intended as a miscellany of string manipulation functions which cannot be found in stringi or stringr.

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Project Status: Active – The project has reached a stable, usable state and is being actively developed. lifecycle

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You can install the release version of strex from CRAN with:


You can install the development version of strex from GitHub with:


How to use the package

See the package website at