【进阶实战】Lua表引用与深拷贝：商店里复制裁决之杖的引用陷阱

local showcase = { name = "裁决之杖",
    price = 5000, attrs = { atk = 37 } }
local auction = showcase
auction.price = 9999      -- 展示柜同步涨价

local function deepCopy(t)
    local out = {}
    for k, v in pairs(t) do
        if type(v) == "table" then
            out[k] = deepCopy(v)
        else
            out[k] = v
        end
    end
    return out
end
local showcase = { name = "裁决之杖",
    price = 5000, attrs = { atk = 37 } }
local auction = deepCopy(showcase)
auction.price = 9999
print(showcase.price, auction.price)