Scala constructor, logic and inheritance

Question

i have a question about scala and logic in constructor. Lets say i have a following code:

class A(val x:Int) {...whatever...}

class B(val y:String) extends A(IntValueDerivedFrom_y)

Now, how would i derive some value from y and passed it to constructor of class A? I hope it's understandable what i ask about.

Thanks for the answers!

Didier Dupont · Accepted Answer · 2011-07-29 13:11:20Z

4

Not sure I understand. You may do

class B(val y: String) extends A(f(y))

f(y) stands for any expression where y appears. For instance, Integer.parseInt(y)

This is close to java code

class B extends A {
   public B(String y) {
       super(Integer.parseInt(y));
   }
}

Is that what you wanted?

answered Jul 29, 2011 at 13:11

Didier Dupont

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1 Comment

Arg Over a year ago

Yeah that's it. I tried that approach before but the f in my case was defined inside the class itself which compiler couldnt find (obviously). I moved it to object b and it works properly now. Thanks!

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