Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/hash_extension.rb

Instance Method Summary collapse

Instance Method Details

#pair_at_chain(chain) ⇒ Object 



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# File 'lib/hash_extension.rb', line 18

def pair_at_chain(chain)
  chain = chain.dup
  chain.pop
  return self.value_at_chain(chain)
end

#recurse(include_root = false, depth = [], &block) ⇒ Object 



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# File 'lib/hash_extension.rb', line 24

def recurse(include_root=false, depth=[], &block)
  self.each_pair { |k,v|
    if v.is_a? Hash
      if include_root
        block.call(depth + [k], v)
      end
      depth.push k
      v.recurse(include_root, depth, &block)
    else
      block.call(depth + [k], v)
      #return "#{depth + [k]}: #{v.inspect}"
    end
  }
  depth.pop
end

#value_at_chain(chain) ⇒ Object 



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# File 'lib/hash_extension.rb', line 2

def value_at_chain(chain)
  current = self
  chain.each do |key|
    if current.is_a? Hash and current.has_key? key
      current = current[key]
      if current.is_a? Array
        current = current.last
      end
    else
      current = nil
      break
    end
  end
  return current
end