Check Inherits from S4 Class
Checks inherits from S4 class using
isS4(x) && methods::is(x, class)
chk_s4_class(x, class, x_name = NULL) vld_s4_class(x, class)
x |
The object to check. |
class |
A string specifying the class. |
x_name |
A string of the name of object x or NULL. |
The chk_ function throws an informative error if the test fails.
The vld_ function returns a flag indicating whether the test was met.
vld_s4_class: Validate Inherits from S4 Class
Other chk_is:
chk_array(),
chk_atomic(),
chk_data(),
chk_function(),
chk_is(),
chk_matrix(),
chk_numeric(),
chk_s3_class(),
chk_vector(),
chk_whole_numeric()
# chk_s4_class
try(chk_s4_class(1, "numeric"))
chk_s4_class(getClass("MethodDefinition"), "classRepresentation")
# vld_s4_class
vld_s4_class(numeric(0), "numeric")
vld_s4_class(getClass("MethodDefinition"), "classRepresentation")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.