Description Usage Arguments Value Examples
f_rhs
extracts the righthand side, f_lhs
extracts the
lefthand side, and f_env
extracts the environment. All functions
throw an error if f
is not a formula.
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f, x |
A formula |
value |
The value to replace with. |
f_rhs
and f_lhs
return language objects (i.e.
atomic vectors of length 1, a name, or a call). f_env
returns an environment.
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