16 lines
333 B
Lua
16 lines
333 B
Lua
local items = {1,2,3,4,1,2,3,4,0/0,nil,"bird","cat","dog","dog","bird",0/0}
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function rmdup(t)
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local r,dup,c,NaN = {},{},1,{}
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for i=1,#t do
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local e = t[i]
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local k = e~=e and NaN or e
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if k~=nil and not dup[k] then
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c, r[c], dup[k]= c+1, e, true
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end
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end
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return r
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end
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print(table.concat(rmdup(items),' '))
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