Supports the definition of sets of properties on objects. Observers can listen to changes on individual properties or the set as a whole. The properties are meant to be fully selfdescribing. In support of this, there is a framework for defining enumerated types, as well as other bounded types, as S4 classes.
Package details 


Author  Tengfei Yin, Michael Lawrence 
Maintainer  Tengfei Yin <yintengfei@gmail.com> 
License  GPL (>= 2) 
Version  0.6.7 
Package repository  View on GitHub 
Installation 
Install the latest version of this package by entering the following in R:

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