Alternative version of is
If a function named is.class exists, call is.class(x).
If not, call is(x, class).
is2(x, class, .xname = get_name_in_parent(x))
x |
Input to check. |
class |
Target class that |
.xname |
Not intended to be used directly. |
TRUE if x belongs to the class and FALSE
otherwise.
is, and
assert_is_all_of for the corresponding assert fns.
is2(1:5, "character")
is2(matrix(1:5), "character")
is2(1:5, c("character", "list", "numeric"))
is2(mean, c("function", "data.frame"))Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.