Message-ID: <54ECC2FB.1090503@skyeome.net>
Date: 2015-02-24T18:29:15Z
From: Skye Bender-deMoll
Subject: alternatives to do.call() when namespace is attached but not loaded?
Dear R-devel
I have a function in a package that essentially provides a wrapper for a
group of functions in another Suggested package (it sets appropriate
defaults for the context, transforms output, etc). I've implemented
this by verifying that the package was loaded with
require(sna)
and then
do.call(snaFunName, args = args)
The rDevel check is requesting that I use requireNamespace(sna) instead
of directly loading the SNA package. This seems reasonable, except that
I have yet to figure out a way to use do.call to call the function when
the namespace is attached but package is not loaded.
do.call("sna::funName",..) doesn't seem to work.
1) Can do.call() call functions that are only namespace attached? Is
there better way to accomplish this without do.call()? For example,
should I use getAnywhere('funName') ('tho this doesn't seem to permit
restricting search to a specific namespace..)
2) Is this an appropriate of require() instead of requireNamespace() to
ensure that the Suggested package is loaded and attached? Can I ignore
the check warning?
best,
-skye