Use this generic to override waldo's default comparison if you need to override the defaults (typically because your object stores data in an external pointer).
waldo comes with methods for a few common cases:
data.table: the .internal.selfref and index attributes
are set to NULL. Both attributes are used for performance optimisation, and
don't affect the data.
xml2::xml_node: the underlying XML data is stored in memory in C,
behind an external pointer, so the we best can do is to convert the
object to a string.
Classes from the RProtoBuf package: like XML objects, these store
data in memory in C++ and only expose string names to R. Fortunately,
these have well-understood string representations that we can use for
comparisons. See
https://protobuf.dev/reference/cpp/api-docs/google.protobuf.text_format/
compare_proxy(x, path = "x")A list with two components:
object: the modified object
path: an updated path showing what modification was applied