Table of Contents

• Month 1 — Runnable Examples
• How to run
• Index (Week 2 — composite types)
• Index (Week 3 — methods, interfaces, errors)
• Index (Week 4 — embedding & generics)
• Conventions

Month 1 — Runnable Examples

Single-concept, stdlib-only programs that back the Week 2 daily notes (composite types). Each folder is its own package main.

How to run

go run ./examples/month-01/<topic>

Index (Week 2 — composite types)

Topic	Concept	Day
slice-internals/	array vs slice, len/cap, backing array, append + aliasing traps	008–009
slice-tricks/	filter in place, insert, delete (ordered & fast), copy	010
maps-sets/	comma-ok, nil-map trap, map[T]struct{} sets, ordered iteration	011
strings-runes/	bytes vs runes, UTF-8, utf8, strings.Builder, reverse	012
structs-tags/	structs, value vs pointer receivers, embedding, JSON tags	013

Index (Week 3 — methods, interfaces, errors)

Topic	Concept	Day
methods/	methods, value vs pointer receivers, method values/expressions	015
interfaces/	implicit satisfaction, method sets, nil-interface trap, type switch	016–017
errors/	%w wrapping, sentinel/custom errors, errors.Is/As/Join	018–019
panic-recover/	panic, deferred recover, Must helpers, error boundary	020

Index (Week 4 — embedding & generics)

Topic	Concept	Day
embedding/	struct & interface embedding, promotion, shadowing, decorator	022
generics/	type params, any/comparable/cmp.Ordered/union (~) constraints, inference	023
generic-ds/	generic Stack[T] & Set[T], zero-value returns, nil-map trap	024
cli-flags/	flag subcommands, FlagSet, positional args, run() error pattern	026

The Week-4 capstone (taskcli: model + atomic JSON store + CLI) is multi-file and lives under projects/taskcli/; its JSON/flag mechanics are shown stdlib-only in structs-tags/ and cli-flags/ here.

Conventions

• One concept per folder; heavily commented as teaching artifacts.
• Standard library only — these compile under the repo root module.

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⬅ Examples