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[R-pkg-devel] why can't we importFrom 'methods' ?

Brian G. Peterson 
newer versions of R require importFrom for functions from 'stats',
'graphics' and many other packages that used to be assumed to be on the
search path and thus available.

'methods' continues to have seemingly different treatment.

If you try to use importFrom to import a single function (in this case
'hasArg') from methods, you receive an ERROR from R CMD check

    Namespace dependency not required : 'methods'

but without the importFrom, you see a number of NOTE's

    no visible global function definition for 'hasArg'

I don't want to import all of 'methods', as I only need one function.

What am I doing wrong?

Regards,

Brian

Thread (5 messages)

Brian G. Peterson why can't we importFrom 'methods' ? May 17 Martin Maechler why can't we importFrom 'methods' ? May 17 Duncan Murdoch why can't we importFrom 'methods' ? May 17 Georgi Boshnakov why can't we importFrom 'methods' ? May 17 Martin Morgan why can't we importFrom 'methods' ? May 17