java 在java中创建元组的简单方法？
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Simplist way to create a tuple in java?
提问by omega
Is there a simple way to create a 2 element tuple in java? I'm thinking of making a class and declaring the variables as final. Would this work?
有没有一种简单的方法可以在 java 中创建一个 2 元素元组？我正在考虑创建一个类并将变量声明为最终变量。这行得通吗？
回答by duffymo
This is as simple as it gets:
这很简单：
public class Pair<S, T> {
public final S x;
public final T y;
public Pair(S x, T y) {
this.x = x;
this.y = y;
}
}
回答by yshavit
Yes. Best practices would be to make the fields private and provide getters for them.
是的。最佳实践是将字段设为私有并为它们提供 getter。
For many people (including [most of?] the language designers), the idea of a tuple runs counter to the strong typing philosophy of Java. Rather than just a tuple, they would prefer a use-case-specific class, and if that class only has two getters and no other methods, so be it.
对于许多人（包括 [大多数？] 语言设计者）来说，元组的想法与 Java 的强类型哲学背道而驰。与其只是一个元组，他们更喜欢特定于用例的类，如果该类只有两个 getter 而没有其他方法，那就这样吧。
回答by anthropomo
I'd prefer the variables private with getters, no setters. Set in the constructor, obviously. Then implement iterable, maybe.
我更喜欢带有 getter 的私有变量，没有 setter。显然，在构造函数中设置。然后实现迭代，也许。
