比较三个相等的值 [英] Compare three values for equality
本文介绍了比较三个相等的值的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
有没有人知道一个捷径来测试三个数字是否相同？我知道这个工作：
Does anybody know of a shortcut to test whether three numbers are the same? I know this works:
if number1 == number2 && number2 == number3 {
}
但我想要更干净，例如;
But I would like something cleaner, such as;
if number1 == number2 == number3 {
}
这很重要，因为我比较了很多不同的值。
It's quite important as I'm comparing a lot of different values.
推荐答案
您可以使用元组的权力和平等的传递属性。
You can use the power of tuples and the Transitive Property of Equality.
if (number1, number2) == (number2, number3) {
}
仅当 number1 等于 number2 AND number2 等于 number3 。这意味着3个值必须相等。
The clause of this IF is true only when number1 is equals to number2 AND number2 is equals to number3. It means that the 3 values must be equals.
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