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instance method
PP::PPMethods#push_inspect_key
push_inspect_key(id)
lib/pp.rb
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# File tmp/rubies/ruby-3.3.0/lib/pp.rb, line 175
def push_inspect_key(id)
Thread.current[:__recursive_key__][:inspect][id] = true
end
Adds the object_id id to the set of objects being pretty printed, so as to not repeat objects.