search for: isoldversion

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2008 Oct 13
0
Version information for S4 classes --- elementary version management
...s not a "large" object. Based on this package version information, (elementary) version management could then be provided by means of generic functions getClassVersion() [as described in the Green Book, 7.4] conv2NewVersion() ## by default issuing an error ("Not yet defined") isOldVersion() ## true or false; by default NA Defining particular methods for his classes, a package maintainer could then issue specific warnings or --- at its best --- even provide coercing methods. What do you think about this? Best, Peter