[Rd] function remains loaded in the search space after detaching the package

From: Joris Meys <jorismeys_at_gmail.com>
Date: Fri, 24 Feb 2012 11:24:35 +0100


I ran into some very irritating behaviour I don't understand. Let me illustrate with the package gdata() and the function print.object_size() :

> print(object.size(iris),units='Kb')

6.3 Kb
> getAnywhere(print.object_size)

A single object matching ‘print.object_size’ was found It was found in the following places
  registered S3 method for print from namespace utils   namespace:utils
with value
...

All is well. So now I load gdata

> require(gdata)

Loading required package: gdata
...
The following object(s) are masked from ‘package:utils’:

    object.size

OK, this is what I would expect:

> print(object.size(iris),units='Kb')

[1] 6424
> getAnywhere(print.object_size)

2 differing objects matching ‘print.object_size’ were found in the following places
  registered S3 method for print from namespace utils   namespace:gdata
  namespace:utils
Use [] to view one of them

Now I detach gdata again

> detach(package:gdata)

But the function print.object_size is still the default for object_size objects!

> print(object.size(iris),units='Kb')

[1] 6424

And it can still be found as well:

> getAnywhere(print.object_size)

2 differing objects matching ‘print.object_size’ were found in the following places
  registered S3 method for print from namespace utils   namespace:gdata
  namespace:utils
Use [] to view one of them

Am I missing something?

Cheers
Joris

-- 
Joris Meys
Statistical consultant

Ghent University
Faculty of Bioscience Engineering
Department of Mathematical Modelling, Statistics and Bio-Informatics

tel : +32 9 264 59 87
Joris.Meys_at_Ugent.be
-------------------------------
Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php

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