Spring RTS Engine

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local choices	= {	"choice1", "choice2", "choice3",}
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-- Retrieves bucketChoice table
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function Choices()
	return choices
end

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VFS.Include('file.lua')

local choices = Choices()

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local t = {1,2,3}
function GetReference()
  return t
end

function GetNew()
  return {1,2,3}
end

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local v = {1,2,3}
local f = function() return 1 end
local s1 = "foo"

function foo()
   local w = v --// you get the reference to v
   local g = f --// you get the reference to f

   local n = {1,2,3} --// creates a NEW table (each run of foo)
   local h = function() return 1 end --// creates a NEW function (-> damn slow operation!)

   local s2 = s1 --// both s1 & s2 point to the same memory location, but once you modify one of them, they create a new memory construct and KEEP the old one, so changes aren't copied between s2 & s1
   local s = "foobar" --// if "foobar" isn't in the internal string-cache, lua will create a new one with its content. But the string is always passed by value.
end

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local t = {1,2,3}
local y = {4,5,6}

local w = y
w[3] = 666

Spring.Echo(y[3]) --// prints: 666

t = 1
y = nil

Spring.Echo(t, y, w) --// prints: 1, nil, table

--The table created for `t` gets freed with next GarbageCollector calling.
--The table created for `y` is still referenced by w! It won't be freed.