[Rd] methods cbind2 bind_activation disrupts cbind everywhere

Martin Morgan mtmorgan at fhcrc.org
Thu Sep 13 00:23:02 CEST 2012

The methods package ?cbind2 includes the instruction to use via 
methods:::bind_activation(TRUE). This changes the default definition of 
cbind globally, disrupting proper evaluation in packages not using 
cbind2. Is cbind2 a hold-over from a time when ... could not be used for 
dispatch? What is a safe way for a package to use cbind2?

This came up in the context of complex package dependencies in 
Bioconductor, as detailed in this thread (sorry for the html).

Dr. Martin Morgan
Fred Hutchinson Cancer Research Center
1100 Fairview Ave. N.
PO Box 19024 Seattle, WA 98109

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