check_if_in | R Documentation |
Checks whether an object is in a list/vector. If not, returns an informative error.
check_if_in(x, list)
x |
(any object) The object to test. |
list |
(list) The list of accepted values |
Logical scalar or error.
check_if_in("a", letters[1:10])
check_if_in("a", letters[2])
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