A tuple provides a lightweight way to retrieve multiple values from a method call. But once you retrieve the tuple, you have to handle its individual elements. Working on an element-by-element basis is cumbersome, as the following example shows. The QueryCityData method returns a three-tuple, and each of its elements is assigned to a variable in a separate operation.
C# features built-in support for deconstructing tuples, which lets you unpackage all the items in a tuple in a single operation. The general syntax for deconstructing a tuple is similar to the syntax for defining one: you enclose the variables to which each element is to be assigned in parentheses in the left side of an assignment statement.