This package has some introductory material on the use of classes in R.
Useful resources:
Papers:
Websites:
Presentations:
Videos:
Example packages using S4:
Auxillary documentation: useMethod() methods() R-bloggers R extensions https://bioconductor.org/help/course-materials/2013/CSAMA2013/friday/afternoon/S4-tutorial.pdf ReferenceClasses()
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