environment_of.RdGet the environment of an object
environment_of(envir)A non-empty character string.
Returns an environment, if envir is
an environment, a function, or a formula.  In all other cases, NULL is
returned.
## An environment
environment_of(globalenv())    ## <environment: R_GlobalEnv>
#> <environment: R_GlobalEnv>
## A primitive function (always in the 'base' namespace)
environment_of(abs)            ## <environment: namespace:base>
#> <environment: namespace:base>
## A package function
environment_of(mean)           ## <environment: namespace:base>
#> <environment: namespace:base>
## Another package function
environment_of(stats::median)  ## <environment: namespace:stats>
#> <environment: namespace:stats>
## A formula
environment_of(y ~ x)          ## <environment: R_GlobalEnv>
#> <environment: 0x58264f85c0e0>
## A non-function object
environment_of(pi)             ## NULL
#> NULL