Method: Tb::Search::State#fetch

Defined in:
lib/tb/search.rb

#fetch(k, *rest) ⇒ Object 



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# File 'lib/tb/search.rb', line 517

def fetch(k, *rest)
  pairs = self
  while !pairs.empty?
    return pairs.val if k == pairs.key
    pairs = pairs.tail
  end
  if block_given?
    yield k
  elsif !rest.empty?
    return rest[0]
  else
    raise KeyError, "key not found: #{k}"
  end
end