The behaviour of within() with list input changes if you delete 2 or more variables, compared to deleting one:
l <- list(x=1, y=2, z=3)
within(l,
{
rm(z)
})
#$x
#[1] 1
#
#$y
#[1] 2
within(l, {
rm(y)
rm(z)
})
#$x
#[1] 1
#
#$y
#NULL
#
#$z
#NULL
When 2 or more variables are deleted, the list entries are instead set to NULL.
Is this intended?
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