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Basic Includes and Extends
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| require 'forwardable' | |
| class A | |
| include Enumerable | |
| extend Forwardable | |
| def_delegators :@source, :[], :<< | |
| def initialize | |
| @source = [] | |
| end | |
| def each(&block) | |
| @source.each(&block) | |
| end | |
| end |
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