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Checks inherits from class using
inherits(x, class)
chk_is(x, class, x_name = NULL)vld_is(x, class)
vld_is(x, class)
The chk_ function throws an informative error if the test fails or returns the original object if successful so it can used in pipes.
chk_
The vld_ function returns a flag indicating whether the test was met.
vld_
The object to check.
A string specifying the class.
A string of the name of object x or NULL.
vld_is(): Validate Inherits from Class
vld_is()
Other chk_is: chk_array(), chk_atomic(), chk_data(), chk_function(), chk_matrix(), chk_numeric(), chk_s3_class(), chk_s4_class(), chk_vector(), chk_whole_numeric()
chk_array()
chk_atomic()
chk_data()
chk_function()
chk_matrix()
chk_numeric()
chk_s3_class()
chk_s4_class()
chk_vector()
chk_whole_numeric()
chk_is(1, "numeric") try(chk_is(1L, "double")) # vld_is vld_is(numeric(0), "numeric") vld_is(1L, "double")
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