Go Defensive Coding

Go has no exceptions and no null-safety in the type system. Every trap below compiles cleanly, passes review, and fails in production.

Detailed reference material, loaded on demand:

• references/nil-and-aliasing.md — the full typed-nil rules, slice aliasing scenarios, and memory retention.
• references/numeric-safety.md — conversion range checks, overflow detection, float and time comparison.

Read a reference file only when the section below is not enough.

Operating Modes

• Harden — you are writing or changing code. Apply every rule as you go.
• Review — you are auditing existing code. Report findings with severity (🔴 panic or corruption, 🟡 latent bug, 🟢 style) and cite file:line.