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brodieG/setOldClassProbs.R

Last active August 29, 2015 14:04
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Test setOldClass Issues
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setOldClassProbs.R
library(devtools)
install_github("pckgA", "brodieg") # defines old class "file" and class union "fileOrNULL" == c("file", "NULL")
install_github("pckgB", "brodieg") # defines old class "file", and nothing else
library(pckgA)
makeDummy() # from pckgA, instantiates a class with a "fileOrNULL" slot, placing a temp file S3 object in the slot
library(pckgB)
makeDummy() # this fails now
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