Scala 中的整数除法
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Int division in scala
提问by Karel Bílek
I have two Intvalues in Scala.
我Int在 Scala 中有两个值。
scala> val a = 3
a: Int = 3
scala> val b = 5
b: Int = 5
Now, I want to divide them and get Float. With as little boilerplate as possible.
现在，我想将它们分开并获得 Float。尽可能少的样板文件。
If I do a/b, I get
如果我这样做a/b，我得到
scala> a/b
res0: Int = 0
I cannot do simple Java (float).
我不能做简单的 Java (float)。
scala> ((Float)a)/b
<console>:9: error: value a is not a member of object Float
((Float)a)/b
^
What should I do?
我该怎么办？
回答by Karel Bílek
The following line followed by its result should solve your problem.
以下行后跟其结果应该可以解决您的问题。
scala> a.toFloat/b
res3: Float = 0.6
回答by Kristian Domagala
Alternative answer that uses type ascription:
使用类型归属的替代答案：
scala> (a:Float)/b
res0: Float = 0.6
