env_has()
is a vectorised predicate that queries whether an
environment owns bindings personally (with inherit
set to
FALSE
, the default), or sees them in its own environment or in
any of its parents (with inherit = TRUE
).
env_has(env = caller_env(), nms, inherit = FALSE)
An environment.
A character vector of binding names for which to check existence.
Whether to look for bindings in the parent environments.
A named logical vector as long as nms
.