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i'm trying to use :copy when growing a userdata:

 
local a = vec(1, 1)
local b = vec(0, 0, 0)
a:copy (b)
print(b)
-- b is still zero

i figured maybe the vectors needed to be the same size but neither of these work either:

 
local a = vec(1, 1)
local b = vec(0, 0)
local c = vec(0, 0)
a:add (0, b)
a:copy (c)
print(a)
print(b)
print(c)



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