Lua - 我可以从返回多个结果的函数中选择我想要的特定结果吗

Question

有没有办法从返回多个结果的函数中选择我想要的结果。例如

local function FormatSeconds(secondsArg)

    local weeks = math.floor(secondsArg / 604800)
    local remainder = secondsArg % 604800
    local days = math.floor(remainder / 86400)
    local remainder = remainder % 86400
    local hours = math.floor(remainder / 3600)
    local remainder = remainder % 3600
    local minutes = math.floor(remainder / 60)
    local seconds = remainder % 60
    
    return weeks, days, hours, minutes, seconds
    
end

FormatSeconds(123456)

我会用什么来只抓取一个，例如小时，或两分钟和秒

Answer 1

您可以这样做，而无需更改函数的返回类型:

local weeks, _, _, _, _ = FormatSeconds(123456) -- Pick only weeks
print(weeks)

要选择多个结果:

local _, _, _, minutes, seconds = FormatSeconds(123456)
io.write(minutes, " minutes ", seconds, " seconds")