Add an attribute to an object indicating which named elements change

This is a generic definition that can be extended according to class.

.addChangedAttr(object, preDigest, origArguments, ...)

# S4 method for ANY
.addChangedAttr(object, preDigest, origArguments, ...)

Arguments

object	Any R object returned from a function
preDigest	The full, element by element hash of the input arguments to that same function, e.g., from .robustDigest
origArguments	These are the actual arguments (i.e., the values, not the names) that were the source for preDigest
...	Anything passed to methods.

Value

The object, modified

Examples

a <- 1
.addChangedAttr(a) # does nothing because default method is just a pass through
#> [1] 1