Using ES6 style {a, b, c} hash construct in Ruby ref: http://qiita.com/karloku/items/0a3c8ed3e39518de5b90

file0.txt

var year = 2016;
var month = 3;
var day = 30;
var theDate = { year, month, day };

file1.txt

def HandyHash(&list_block)
  variables = yield.map(&:to_s)
  Hash[
    variables.map do |variable|
      [variable.to_sym, list_block.binding.local_variable_get(variable)]
    end
  ]
end