Week 4 continued to delve into polymorphism with a focus on Types and Pattern Matching. Generalizing functions to accept multiple parameter types is a clear highlight of Scala.

scala_polymorphism
generic functions in scala

Pattern matching was a topic of week 4 that was used in every subsequent week. Case statement with pattern matching appears to be another staple of Scala.

Week 4 lectures

Week 4’s assignment of implementing the Huffman coding compression algorithm was a good practical example of Scala’s power. Note my source has a number of errors in it.

Week 4 Assignment source