env_get {rlang} | R Documentation |
env_get()
extracts an object from an enviroment env
. By
default, it does not look in the parent environments.
env_get(env = caller_env(), nm, inherit = FALSE)
env |
An environment or an object bundling an environment, e.g. a formula, quosure or closure. |
nm |
The name of a binding. |
inherit |
Whether to look for bindings in the parent environments. |
An object if it exists. Otherwise, throws an error.
parent <- child_env(NULL, foo = "foo") env <- child_env(parent, bar = "bar") # This throws an error because `foo` is not directly defined in env: # env_get(env, "foo") # However `foo` can be fetched in the parent environment: env_get(env, "foo", inherit = TRUE)