| class_equals_linter {lintr} | R Documentation |
Usage like class(x) == "character" is prone to error since class in R
is in general a vector. The correct version for S3 classes is inherits():
inherits(x, "character"). Often, class k will have an is. equivalent,
for example is.character() or is.data.frame().
class_equals_linter()
Similar reasoning applies for class(x) %in% "character"
best_practices, consistency, robustness
linters for a complete list of linters available in lintr.