R: Does the object inherit from some class?

assert_is_inherited_from {assertive.types}

R Documentation

Does the object inherit from some class?

Description

Checks to see if an object is inherited from any of the specified classes.

Usage

assert_is_inherited_from(x, classes,
  severity = getOption("assertive.severity", "stop"))

is_inherited_from(x, classes, .xname = get_name_in_parent(x))

Arguments

`x`	Any R variable.
`classes`	A character vector of classes.
`severity`	How severe should the consequences of the assertion be? Either `"stop"`, `"warning"`, `"message"`, or `"none"`.
`.xname`	Not intended to be used directly.

Value

TRUE if x inherits from at least one of the classes, as determined by inherits.

Examples

x <- structure(1:5, class = c("foo", "bar"))
assert_is_inherited_from(x, c("foo", "baz"))
assertive.base::dont_stop(assert_is_inherited_from(x, c("Foo", "baz")))