可以从元组初始化多个变量吗? [英] Possible to initialize multiple variables from a tuple?

问题描述

在某些语言(例如PHP，Haskell或Scala)中，您可以通过类似于以下伪代码的方式从元组中分配多个变量:

  list(字符串值1，字符串值2)= tupleWithTwoValues; 

但是，我找不到在C#中执行此操作的方法，而没有编写更长的，更丑陋的代码:

  string firstValue = tupleWithTwoValues.Item1;字符串secondValue = tupleWithTwoValues.Item2; 

这种两行解决方案显然不是世界末日，但我一直在寻找编写更漂亮代码的方法.

有人知道更好的方法吗?

解决方案

现在在C#7中可用:

  public(字符串开头，字符串结尾)FullName(){返回("Rince"，"Wind")；}(var first，var last)= FullName(); 

您甚至可以使用一个var声明:

  var(first，last)= FullName(); 

官方文档中有关解散元组的更多信息./p>

In some languages (such as PHP, Haskell, or Scala), you can assign multiple variables from tuples in a way that resembles the following pseudocode:

list(string value1, string value2) = tupleWithTwoValues;

I can't find a way to do this in C#, however, without writing longer, uglier code:

string firstValue = tupleWithTwoValues.Item1;
string secondValue = tupleWithTwoValues.Item2;

This two-line solution is obviously not the end of the world, but I'm always looking for ways to write prettier code.

Does anyone know a better way to do this?

解决方案

This is now available in C# 7:

public (string first, string last) FullName()
{
    return ("Rince", "Wind");
}

(var first, var last) = FullName();

You can even use a single var declaration:

var (first, last) = FullName();

More on destructuring tuples in the official documentation.

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