gistfile1.lua

do
local mem = collectgarbage("count")
local s = "Hi"
for t=1,1000 do
  x = function() print(s) end
end
ChatFrame1:AddMessage("Used: "..(collectgarbage("count") - mem))
end


do
local mem = collectgarbage("count")
local s = "Hi"
local t = "Hi again"
for t=1,1000 do
  x = function() print(s) end
end
ChatFrame1:AddMessage("Used: "..(collectgarbage("count") - mem))
end

do
local mem = collectgarbage("count")
local s = "Hi"
local t = "Hi again"
for t=1,1000 do
  x = function() print(s..t) end
end
ChatFrame1:AddMessage("Used: "..(collectgarbage("count") - mem))
end

-- Results:
-- 31.28125
-- 31.28125
-- 66.4375