如何在 Scala 中定义常量成员?
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时间:2020-10-22 06:25:02 来源:igfitidea点击:
How to define a constant members in Scala?
提问by sungiant
What is the correct was to define a constant such as Pi or the Golden Ratio in a Scala program?
在 Scala 程序中定义常量(例如 Pi 或黄金比例)的正确做法是什么?
As an example, in C# I can do this:
例如,在 C# 中,我可以这样做:
class Example
{
public readonly static Double GoldenRatio;
static Example ()
{
GoldenRatio = (1.0 + Math.Sqrt (5.0)) / 2.0;
}
}
回答by Ionu? G. Stan
It would be just a valmember:
它只是一个val成员:
object Example {
val GoldenRatio = (1.0 + Math.sqrt(5.0)) / 2.0
}
Also, take a look at the Scala Style Guide section regarding constants.
另外,请查看有关常量的Scala 样式指南部分。

