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Current File : /opt/alt/ruby18/share/ri/1.8/system/Test/Unit/Util/Observable/add_listener-i.yaml
--- !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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