attach

I would like to know what happens on the memory side when I use
attach(inputdata)

Is there a second allocation of memory for inputdata?

Not, it just guides the syntax.

Is it better not to use attach function?

A qualified "yes" in the sense of  "do not use it". I think it is used to
much in old documentation, presumably because some S eggshells.

I use with() if I have a nasty formula to unclutter; it acts locally only
and you don't get unwanted side effects.

Dieter

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