Blocks and Lexical Scopes

This lecture covers the concept of nested functions in functional programming, emphasizing the importance of organizing code into small functions. It also explains blocks in Scala, their structure, and visibility rules. The instructor demonstrates lexical scoping and simplification techniques, such as eliminating redundant parameters. Additionally, the lecture introduces semicolons in Scala and summarizes key elements of functional programming, including arithmetic expressions, recursion, and evaluation strategies.