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plyr
is.formula
is.formula function
Is a formula? Checks if argument is a formula
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plyr package
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Maintainer: Hadley Wickham
License: MIT + file LICENSE
Last published: 2023-10-02
Useful links
https://github.com/hadley/plyr/issues
http://had.co.nz/plyr
https://github.com/hadley/plyr