如何删除异常“预定义类型”ValueTuple`2'必须是一个结构体“调试时？ [英] How can I remove exception "Predefined type 'ValueTuple`2' must be a struct" when debugging?

问题描述

我开始在c＃7.0中使用新的元组功能，但是我注意到，在调用模式下，在返回元组的函数和调用者中都不可能检查变量值。相反，显示了一个例外：

I started using the new tuple feature in c# 7.0 but I noticed that neither in the function that returns a tuple nor in its caller is possible to check the variable values in debug mode. Instead an exception is shown:

$exception  error CS8182: Predefined type 'ValueTuple`2' must be a struct.  

有没有办法摆脱这个故障并正常调试？

Is there a way to get rid of that glitch and debug normally?

推荐答案

这似乎是Microsoft已修复的错误，但将来可能会更新（2017）
https://github.com/dotnet/roslyn/pull/16930

It seems a bug that Microsoft has fixed but it will be available in a future update (2017) https://github.com/dotnet/roslyn/pull/16930

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