Wrap an expression and its environment into a parcel.
Refsets (and other active bindings) cannot be passed as function
arguments, since doing so makes a copy.
wrap allows you to pass
arbitrary expressions between functions and records where they are
an R expression
environment in which
An object of class 'parcel', with components
Other wrapping functions:
1 2 3 4 5 6 7 8 9 10 11 12
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