On 09/15/2010 12:03 PM, darckeen wrote: > > Class("person",representation(age="numeric",weight="numeric")) > [1] "person" >> bob <- new("person",age=30) >> is.null(b...@weight) > [1] FALSE >> b...@weight > numeric(0) >> b...@weight == numeric(0) > logical(0)
Hi darckeen -- use the prototype argument to setClass to assign a default value, and test for that. Martin > > How can i test to see if a s4 property is assigned? > ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.