env_binding_lock(env, nms = NULL) env_binding_unlock(env, nms = NULL) env_binding_are_locked(env, nms = NULL)
Names of bindings. Defaults to all bindings in
env_binding_are_unlocked() returns a logical vector as
nms and named after it.
env_binding_unlock() return the old value of
env_lock() for locking an environment.
# Bindings are unlocked by default: env <- env(a = "A", b = "B") env_binding_are_locked(env)#> a b #> FALSE FALSE# But can optionally be locked: env_binding_lock(env, "a") env_binding_are_locked(env)#> a b #> TRUE FALSE# If run, the following would now return an error because `a` is locked: # env_bind(env, a = "foo") # with_env(env, a <- "bar") # Let's unlock it. Note that the return value indicate which # bindings were locked: were_locked <- env_binding_unlock(env) were_locked#> a b #> TRUE FALSE# Now that it is unlocked we can modify it again: env_bind(env, a = "foo") with_env(env, a <- "bar") env$a#>  "bar"