为什么Scala中的格子？
[英]Why's type lattice in Scala?
问题描述
I heard someone said: 
我听到有人说：
"Scala uses a type lattice rather than a type hierarchy, which is different from Java".
I do not quite understand what the meaning type lattice is and what the main difference between type lattice and type hierarchy is. 我不太清楚格子的意义是什么，以及类型网格和类型层次结构之间的主要区别是什么。
Could someone explain this term to me? 有人可以向我解释这个词吗？
1 个解决方案
解决方案1
8 已采纳 2014-12-11 16:17:02
Its essentially means that : The type hierarchy for Scala is a lattice, ie it has a “bottom” as well as a “top”. 它本质上意味着： Scala的类型层次结构是一个点阵，即它有一个“底部”和一个“顶部”。
As seen from the image the top type here is Any and the bottom is Nothing . 从图像中可以看出，这里的顶部类型是Any ，底部是Nothing 。
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