Go Backend Foundation 🚀

A structured journey through the fundamentals of Go, following "The Go Programming Language" by Donovan & Kernighan.

📂 Chapter 1: Tutorial Recap

This chapter covered the essential syntax and standard libraries required to build functional tools.

• 1.1 & 1.2: Basic syntax and Command-Line Arguments using os.Args.
• 1.3 & 1.4: Data structures and generating animated GIFs.
• 1.5 Fetching URLs: Created a mini-CURL tool using net/http.
• 1.6 Concurrency: Learned to fetch multiple URLs simultaneously using Goroutines and Channels.
• 1.7 Web Server: Built a local echo server to handle HTTP requests.
• 1.8 Loose Ends: Mastered Pointers, Structs, and Switch statements for cleaner logic.

Chapter 2: Program Structure

This chapter dives into the mechanics of how Go programs are organized, covering naming conventions, variable declarations, and memory management.

2.1 Names

• Learned Go's naming rules (Unicode letters, underscores, and digits).
• Visibility: Explored how capitalized names are exported (public) while lowercase names are unexported (private).

2.2 Declarations

• Practiced the four main declaration types: var, const, type, and func.

2.3 Variables & Pointers

• Zero Values: Understanding how Go initializes variables to a default state (e.g., 0, "", nil).
• Pointers: Using & to get addresses and * to dereference, allowing direct memory access.
• The flag Package: Built echo4.go to handle command-line flags via pointers.
• Memory Lifecycle: Learned about the new function and how variables "escape" to the heap.