Is there a version of the class Tuple whose Items properties are not readonly and can be set? [duplicate]

问题

This question already has an answer here:

Class inheritance: recreate base class items (or instance) from a property of the inherited class (1 answer)

Closed 4 years ago.

I want to know whether there is a built-in version of the class Tuple whose Items properties are not readonly and can be set.

Or can someone provide me such a version?

I am searching for a solution that implements the base functions of the Tuple class, (Equals, GetHashCode)

回答1:

No, as mentioned a Tuple<> is intended to be immutable.

I use a custom Pair class if I need a mutable type that does the same thing, although in the spirit of embracing function concepts, I try not to use it.

namespace StackOverflow.Helpers
{
    public class Pair<T1, T2>
    {
        public T1 First { get; set; }
        public T2 Second { get; set; }
    }
} 

回答2:

Since GetHashCode should return the same hash code for instances that are equal, and should be immutable after construction, any general-purpose Tuple implementation that overrides Equals and GetHashCode will necessarily have readonly properties for the wrapped items.

Therefore you're unlikely to find what your looking for. It's not clear to me why you would want both mutability and the Equals/GetHashCode overrides, but if you do, and understand the risks, you'll probably have to roll your own.

来源：https://stackoverflow.com/questions/7787994/is-there-a-version-of-the-class-tuple-whose-items-properties-are-not-readonly-an