Phase 1 · Programming foundations (Go)

Week 5: Files and Project 2

Friday deliverable: Project 2

Threads this phase

Security. Untrusted input, secrets never in code or Git, safe file writes

AI. Tutor only: explain concepts and errors, quiz me; no code generation

System trace. Source → compiler → binary → process → file system

Project 2

Local ledger

Stores members and transactions in JSON/CSV files; import, export, monthly report

Runs on: Learner's laptop

Phase 1 exit criteria

understand: Types, scope, mutation, collections, complexity
explain: Why a hash map lookup is fast
build: CLI tools and file-backed apps split into packages
debug: Any error or panic, using the stack trace and Delve
test: Table-driven go test unit tests, including edge cases
secure: Validate input; keep secrets in environment variables
deploy: Cross-compile a CLI binary for Linux, macOS and Windows
operate: Handle errors with clear messages and exit codes