Description Usage Arguments Details Value Examples
Create a reference to a 'part' of an R object. Use deref
or `!`
to obtain the values
within the referenced object.
1 |
x |
object to be referenced; must be a symbol or character |
... |
objects passed to |
slice
is similar to ref
; it creates a reference to another R object. There are two
main differences with ref
. First, slice
only accepts names or characters instead of
expressions. Second, slice
records a part of the underlying object. slice(x, 1:2, 3)
is equivalent to the reference of x[1:2, 3]
. This is similar to ref(x[1:2, 3])
, though the
implementation is different. ref
would create an expression with a reference to x
, while
slice(x, 1:2, 3)
creates a list with a reference to x
and the extract inputs. slice
is more efficient, but is limited in its capabilities.
object of class "slice"
and "ref"
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