由于业务需求，最近在学习Scala，教程来源：《快学Scala》。每天可能会更新点学习笔记。

目录结构如下：

- The Basics (A1)
- Control Structures and Functions (A1)
- Arrays (A1)
- Maps and Tuples (A1)
- Classes (A1)
- Objects (A1)
- Packages and Imports (A1)
- Inheritance (A1)
- Files and Regular Expressions (A1)
- Traits (L1)
- Operators (L1)
- Higher-Order Functions (L1)
- Collections (A2)
- Pattern Matching and Case Classes (A2)
- Annotations (A2)
- XML Processing (A2)
- Type Parameters (L2)
- Advanced Types  (L2)
- Parsing and Domain-Specific Languages (A3)
- Actors (A3)
- Implicits (L3)
- Delimited Continuations (L3)


