env_unbind: Remove bindings from an environment

In hadley/rlang: Functions for Base Types and Core R and 'Tidyverse' Features

Remove bindings from an environment

Description

env_unbind() is the complement of env_bind(). Like env_has(), it ignores the parent environments of env by default. Set inherit to TRUE to track down bindings in parent environments.

Usage

env_unbind(env = caller_env(), nms, inherit = FALSE)

Arguments

env	An environment.
nms	A character vector of binding names to remove.
inherit	Whether to look for bindings in the parent environments.

Value

The input object env with its associated environment modified in place, invisibly.

Examples

env <- env(foo = 1, bar = 2)
env_has(env, c("foo", "bar"))

# Remove bindings with `env_unbind()`
env_unbind(env, c("foo", "bar"))
env_has(env, c("foo", "bar"))

# With inherit = TRUE, it removes bindings in parent environments
# as well:
parent <- env(empty_env(), foo = 1, bar = 2)
env <- env(parent, foo = "b")

env_unbind(env, "foo", inherit = TRUE)
env_has(env, c("foo", "bar"))
env_has(env, c("foo", "bar"), inherit = TRUE)

hadley/rlang documentation built on Nov. 1, 2024, 4 p.m.