In this chapter, you learned many things related to algorithms and data structures. You also learned how to use existing Go packages and how to develop your own Go packages. This chapter also talked about garbage collection in Go and how to find information about your environment.
In the next chapter, we will start talking about systems programming and present even more Go code. More precisely, Chapter 5, Files and Directories, will talk about how to work with files and directories in Go, how to painlessly traverse directory structures, and how to process command-line arguments using the flag package. But more importantly, we will start developing Go versions of various Unix command-line utilities.
