lisp

gistfile1.txt

def lisp_eval(function)
  if function[0] == "#"
    return true if function[1] == "t"
  elsif function[0] == "("
    if function.split('')[1..-2].all?{|letter| letter != ")"}
      operation_eval(function)
    else
      operation_eval function.split(")").to_s.delete("\"").split("(").last.delete(']')
    end
  elsif function[0].to_i
    return function.to_i
  end
end

def operation_eval(function)
  arr = function.delete("(").delete(")").split(' ')
  operator = arr.delete_at(0)
  string = String.new
  arr.each do |element|
    string << element + operator
  end
  return eval string[0..-2]
end