[Rd] Load a package without installing it

[Hadley Wickham]

> Nice. I would guess many of us would have versions of this, it would be good
> to formalise it so that it could deal with :
> - namespaces, you might want your unexported functions to be separate from
> your exported functions. It looks like your function loads everything into
> .GlobalEnv
> - S4 objects, what would happen if you re-source the definition of an S4
> class and continue to manage objects created before the resourcing

I use neither namespaces nor S4, so it's no suprise my code doesn't
handle them ;)

Hadley

-- 
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