Hi,

I have a problem with a package I have developed in that functions do not get 
loaded due to older versions of the functions being in the .GlobalEnv’ fetched 
from .Rdata files stored from previous saved workspaces. I need to be able to 
fix this somehow when I load the package. I do not want to mess up the search 
order to fix the problem.

How I got myself into this mess is that I started developing using a bunch of R 
files and a dynamic library and then loaded these from an R function rather 
than a package. This is great when developing as it allows quick reloading. 
After doing this for about a year now I have (unknowingly) populated all my 
favourite working directories with .Rdata files that contain various versions 
of my functions. And I shared this collection of code, with its flakey loading 
mechanism, with PhD students and colleagues who have used it and nicely 
populated their working directories with it as well….

So now I have learnt how to turn it into a package as it is in a more stable 
state. But when I load it of course the .GlobalEnv with the definition from old 
saved .Rdata files is first in the search order. I say "of course" but tt has 
taken me a while to find this out. At first I thought I was going mad as the 
old functions seemed to magically turn up even though I had updated the package 
and checked that the new versions of the functions were the only ones in the 
system (or so I thought)…

My question is: how can I force a package to overwrite the "old" definitions in 
the .GlobalEnv. If it cannot be done automatically it could be a user triggered 
function. While developing I still want newer versions of functions to take 
precedence in the .GlobalEnv over the package versions. i.e. I do not want the 
package to be earlier in the search order than .GlobalEnv (if this is even 
possible), I just want to be able to delete the old definitions. I do not want 
to delete the .Rdata files as there is useful state in them...

Any help getting me out of this mess would be appreciated!

Martin

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