local function f1 (t,lines) 
  setmetatable({lineinfo = "toto", unpack(lines)}, t)
end

local function f2 (t, lines)
  local mt = {lineinfo = "toto"} 
    for i=1,#lines do
      t[i]=lines[i]
    end
  
  setmetatable(mt, t)
end

local function f3 (t, lines)
  local mt = {lineinfo = "toto"} 
  for i, var in ipairs(lines) do
      mt[i]=var
  end
  setmetatable(mt, t)
end



local function main()
  local t = {}
  local lines = {}
  for var=0, 1000 do
  	lines[var] = var
  end
  
  local b = os.clock()
  for i=0, 300000 do
  f1(t, lines)
  end
  local e = os.clock()
  print (os.difftime(e,b))
  
  
      
  local b = os.clock()
  for i=0, 300000 do
  f2(t, lines)
  end
  local e = os.clock()
  print (os.difftime(e,b))
end
main()