Inheritance Exercises Implementing Our Own Collection #8.3 Scala functioning and programming

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Scala functioning and programming for beginners

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What a very beautiful and simple explanation of trait vs abstract classes!

franckt
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I'm in scala version 2.13.10 and I'm following with your code. I got the exception during the initiation. The exception is from the head and tail of object Empty. I'm using 0 for head and null for tail, then I'm all good. However, if I use the generic class in the following lecture, then I don't know what should I place here for head and tail of the Empty object.

yiyang
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