Method: LazyGraph::StackPointer#ptr_at

Defined in:
lib/lazy_graph/stack_pointer.rb

#ptr_at(index) ⇒ Object

Retrieves the StackPointer at a specific index in the upward chain of parents.



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# File 'lib/lazy_graph/stack_pointer.rb', line 32

def ptr_at(index)
  @pointer_cache ||= {}.compare_by_identity
  @pointer_cache[index] ||= depth == index ? self : parent&.ptr_at(index)
end