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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