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--- !ruby/object:RI::MethodDescription aliases: [] block_params: value comment: - !ruby/struct:SM::Flow::P body: Adds the passed proc as a listener on the channel indicated by channel_name. listener_key is used to remove the listener later; if none is specified, the proc itself is used. - !ruby/struct:SM::Flow::P body: "Whatever is used as the listener_key is returned, making it very easy to use the proc itself as the listener_key:" - !ruby/struct:SM::Flow::VERB body: " listener = add_listener("Channel") { ... }\n remove_listener("Channel", listener)\n" full_name: Test::Unit::Util::Observable#add_listener is_singleton: false name: add_listener params: (channel_name, listener_key=NOTHING) {|value| ...} visibility: public
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