get a persistent attribute for an object
get a persistent attribute for an object
Basic S3 method
Unlike attr<-, this method (essentially) stores the
attribute in a reference to the object, not a copy. As such it can
be used within function call (handlers) to assign values outside
the scope of the function call.
Basic S3 method
tag(obj, key) ## Default S3 method: tag(obj, key) tag(obj, key) <- value tag(obj, key) <- value
obj |
object |
key |
character. Values are stored by key. If missing, all keys are returned. |
value |
to assign to key |
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.