Does an environment have or see bindings?
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)
env |
An environment. |
nms |
A character vector of binding names for which to check existence. |
inherit |
Whether to look for bindings in the parent environments. |
A named logical vector as long as nms.
parent <- child_env(NULL, foo = "foo") env <- child_env(parent, bar = "bar") # env does not own `foo` but sees it in its parent environment: env_has(env, "foo") env_has(env, "foo", inherit = TRUE)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.