lua的迭代器跟for范型示例
lua的迭代器和for范型示例
function iter(t)
local i = 0
local n = table.getn(t)
return function ()
i = i + 1
if(i <=n ) then
return t[i]
else
return nil
end
end
end
ar = {1, 2, 3}
for e in iter(ar) do
print(e)
end