[Lua] rawset は別に速くなかった ref: http://qiita.com/zetamatta/items/9c2d70c32cfe47e08abe

bench1.cmd

::rem:: --[[ vim:set ft=lua:
@lua "%~f0" %* & exit /b
]]--
t = {}
for i=1,100000 do
    table.insert(t,"x")
end
print(os.clock())

bench2.cmd

::rem:: --[[ vim:set ft=lua:
@lua "%~f0" %* & exit /b
]]--
t = {}
for i=1,100000 do
    t[i] = "x"
end
print(os.clock())

bench3.cmd

::rem:: --[[ vim:set ft=lua:
@lua "%~f0" %* & exit /b
]]--
t = {}
for i=1,100000 do
    rawset(t,i,"x")
end
print(os.clock())

file1.txt

$ bench1
0.018

file3.txt

$ bench2
0.006

file5.txt

$ bench3
0.015