ENV.member?(name) â true or false Class Public methods Returns true

pretty_print(q) Class Public methods

ENV.empty? â true or false Class Public methods Returns true when there are

ENV[name] â value Class Public methods Retrieves the value for

ENV.to_a â Array Class Public methods Converts the environment variables into

ENV.delete(name) â valueENV.delete(name) { |name| } â value Class Public methods

ENV.delete_if { |name, value| } â HashENV.delete_if â Enumerator Class Public methods

ENV.rehash Class Public methods Re-hashing the environment variables does nothing

ENV.each { |name, value| } â HashENV.each â EnumeratorENV.each_pair { |name, value| } â HashENV.each_pair

ENV.invert â Hash Class Public methods Returns a new hash created by using