is_letter {charcuterie} | R Documentation |
Compares against the values of letters
(the English alphabet),
ignoring case.
is_letter(x)
x |
A vector of characters. |
A boolean vector indicating whether each element of x
is a
letter (appears in letters
ignoring case).
is_letter(chars("Lee7c0deR"))
Filter(is_letter, chars("w00t"))