Module 1: Foundations

Go from zero variables, functions, control flow, errors, pointers, packages, strings.

Topics

#	Topic	Source	Key Concepts
1	Hello World	src/01_foundations/01_hello_world/main.go	package, import, func main
2	Variables & Types	src/01_foundations/02_variables_types/main.go	var, :=, const, zero values
3	Functions	src/01_foundations/03_functions/main.go	Multiple returns, closures, variadic
4	Control Flow	src/01_foundations/04_control_flow/main.go	for (only loop), switch, defer
5	Errors	src/01_foundations/05_errors/main.go	error interface, %w wrapping, Is/As
6	Pointers	src/01_foundations/06_pointers/main.go	& and *, no arithmetic, pass by pointer
7	Packages	src/01_foundations/07_packages_modules/main.go	Visibility, go.mod, project layout
8	Strings & Runes	src/01_foundations/08_strings_runes/main.go	UTF-8, rune iteration, Builder

Run Any Example

go run src/01_foundations/01_hello_world/main.go

What You'll Learn

• Go's type system: static, inferred, no implicit conversions
• Error handling as values (no exceptions)
• Pointers without arithmetic safe by design
• Package visibility via capitalization
• UTF-8 native string handling with runes