--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
  body: Returns <tt>true</tt> if the given instance variable is defined in <em>obj</em>.
- !ruby/struct:SM::Flow::VERB 
  body: "   class Fred\n     def initialize(p1, p2)\n       @a, @b = p1, p2\n     end\n   end\n   fred = Fred.new('cat', 99)\n   fred.instance_variable_defined?(:@a)    #=&gt; true\n   fred.instance_variable_defined?(&quot;@b&quot;)   #=&gt; true\n   fred.instance_variable_defined?(&quot;@c&quot;)   #=&gt; false\n"
full_name: Object#instance_variable_defined?
is_singleton: false
name: instance_variable_defined?
params: |
  obj.instance_variable_defined?(symbol)    => true or false

visibility: public