(This course is exclusively provided by Xuetu 51you. The lecturer is Wobble Teenager Dream. There are 30 courses in total. Technical points involved in the course: 1. Basic features of Scala, mainly introducing the basics of Scala language, including basic data types, functions, and control structures of Scala 2. Intermediate features of Scala, mainly introducing Scala object-oriented programming and functional programming technologies, including classes, objects, inheritance, etc. 3. Advanced features of Scala, mainly introducing Scala advanced programming technologies commonly used in engineering practice, including type parameters, generics, and annotations Implicit parameter and implicit conversion, Scala concurrent programming, database programming, Scala manipulating XML, Scala server scripting, etc.)