记录：有趣的C#多元运算符 ? : 表达式写法

一个业余写代码的2024-06-28 12:15

有时候用

//...What're you she wanna go

else if

//...do do do

else

//...and i know something just like this...

感觉代码太多了怎么优雅的、高端的替换？

看个高端的栗子菊：

cs 复制代码

LedCOM["parity"] = ledData[4] == "N" ? "None" : (ledData[4] == "O" ? "Odd" : (ledData[4] == "E" ? "Even" : "error"));

一行太多不够看，咱就换个行吧

cs 复制代码

LedCOM["parity"] = 
ledData[4] == "N" ? "None"
: (ledData[4] == "O" ? "Odd"
: (ledData[4] == "E" ? "Even" : "error"));

看上面的代码好像很牛逼的样子，其实这段代码可以替换如下：

（1）长得丑的胖梨

cs 复制代码

if (ledData[4] == "N")
{
    LedCOM["parity"] = "None";
}
else
{
    if (ledData[4] == "O")
    {
        LedCOM["parity"] = "Odd";
    }
    else
    {
        if (ledData[4] == "E")
        {
            LedCOM["parity"] = "Even";
        }
        else
        {
            LedCOM["parity"] = "error";
        }
    }
}

（2）身材苗条匀称一般般的

cs 复制代码

if (ledData[4] == "N")
{
    LedCOM["parity"] = "None";
}
else if (ledData[4] == "O")
{
    LedCOM["parity"] = "Odd";
}
else if (ledData[4] == "E")
{
    LedCOM["parity"] = "Even";
}
else
{
    LedCOM["parity"] = "error";
}

（3）漂亮优雅有气质的大漂亮

cs 复制代码

switch (ledData[4])
{
    case "N": LedCOM["parity"] = "None"; break;
    case "O": LedCOM["parity"] = "Odd"; break;
    case "E": LedCOM["parity"] = "Even"; break;
    default: LedCOM["parity"] = "error"; break;
}

（4）穿越回到过去，且看这高贵冷艳、清新脱俗、优雅、不可方物的妖女迷行

cs 复制代码

LedCOM["parity"] = ledData[4] == "N" ? "None" : (ledData[4] == "O" ? "Odd" : (ledData[4] == "E" ? "Even" : "error"));