C# 8 新开关可以替换包含多个的代码块吗？ : ? : 表达式？答案

【问题标题】：Can C# 8 new switch replace a code block containing multiple ? : ? : expressions?C# 8 新开关可以替换包含多个的代码块吗？ : ? : 表达式？
【发布时间】：2019-12-28 10:42:58
【问题描述】：

这是我现在正在做的一个例子：

return
    shpc == 0 ? "Currently, based on your selection below, you have not yet identified any hidden cards in your card deck." :
    shpc == 1 ? "Currently, based on your selection below, you have one hidden card in your card deck." :
                $"Currently, based on your selection below, you have {shpc} hidden cards in your card deck. These will not be visible.";

代码词，但对添加到 switch 的内容不太了解我想知道这是否也可以使用 switch 表达式来完成？

【问题讨论】：

你可以用“经典”开关替换它，不需要c#8开关的新奇特性
@GianPaolo switch 表达式比 switch 语句更简洁，更易于使用，在 case 块中有很多 returns 或直接变量赋值。

标签： c# switch-statement c#-8.0

【解决方案1】：

试试这个

return shpc switch 
{
    0 => "Currently, based on your selection below, you have not yet identified any hidden cards in your card deck.",
    1 => "Currently, based on your selection below, you have one hidden card in your card deck.",
    _ => $"Currently, based on your selection below, you have {shpc} hidden cards in your card deck. These will not be visible."
};

【讨论】：

【解决方案2】：

肯定的：

return shpc switch 
{
    0 => "Currently, based on your selection below, you have not yet identified any hidden cards in your card deck.",
    1 => "Currently, based on your selection below, you have one hidden card in your card deck.",
    _ => $"Currently, based on your selection below, you have {shpc} hidden cards in your card deck. These will not be visible."
};

【讨论】：