Add a Class Hierarchy to the Cache

Add a class hierarchy to the class hierarchy cache. This is necessary whenever an S3 class's class hierarchy is important when inferring compatibility between types.

Usage

add_class_hierarchy_cache(hierarchy)

Arguments

hierarchy

character the class hierarchy to add; should correspond to the class() of the lowest object in the hierarchy.

Value

NULL

See also

Other class hierarchy operations: register_autoconvert_function(), reset_autoconvert_register(), reset_class_hierarchy_cache()

Examples

# This lets mlr3pipelines handle "data.table" as "data.frame".
# This is an example and not necessary, because mlr3pipelines adds it by default.

add_class_hierarchy_cache(c("data.table", "data.frame"))