env_bury()
is like env_bind()
but it creates the bindings in a
new child environment. This makes sure the new bindings have
precedence over old ones, without altering existing environments.
Unlike env_bind()
, this function does not have side effects and
returns a new environment (or object wrapping that environment).
env_bury(.env, ...)
Pairs of names and expressions, values or functions. These dots support tidy dots features.
A copy of .env
enclosing the new environment containing
bindings to ...
arguments.
# NOT RUN {
orig_env <- env(a = 10)
fn <- set_env(function() a, orig_env)
# fn() currently sees `a` as the value `10`:
fn()
# env_bury() will bury the current scope of fn() behind a new
# environment:
fn <- env_bury(fn, a = 1000)
fn()
# Even though the symbol `a` is still defined deeper in the scope:
orig_env$a
# }
Run the code above in your browser using DataLab