【入门夯实】同键覆盖：配置合并时的数据丢失排查

local function mergeBad(dst, src)
    for k, v in pairs(src) do
        dst[k] = v
    end
    return dst
end

local function mergeSafe(dst, src, label)
    local conflicts = {}
    for k, v in pairs(src) do
        if dst[k] ~= nil then
            conflicts[#conflicts + 1] = k
        end
        dst[k] = v
    end
    if #conflicts > 0 then
        sendmsg(nil, 1, label .. " 合并覆盖键：" .. table.concat(conflicts, "、"))
    end
    return dst
end

local function mergeDeep(dst, src)
    for k, v in pairs(src) do
        if type(v) == "table" and type(dst[k]) == "table" then
            mergeDeep(dst[k], v)
        else
            dst[k] = v
        end
    end
    return dst
end