Code Simplification

Necessity Questions

• "Does this need to happen here, or can something else handle it?"
• "Does this need to happen now, or can it be deferred?"
• "Does this need to happen at all?"

Redundancy Questions

• "Is this duplicated elsewhere?"
• "Can existing code already handle this case?"
• "Are we checking the same condition multiple times?"

Common Simplification Patterns

1. Remove Defensive Code for Non-Problems

Before: Watch parent directory to detect file recreation Question: "When would this actually happen?" Answer: Only when file is deleted and recreated - but periodic sweep catches this After: Remove parent directory watching

2. Eliminate Work During Inactive States

Before: Poll every 30s, check if active, return early if not Question: "Why wake up just to do nothing?" After: Sleep until next active period

3. Stop Reloading Unchanging State

Before: Reload config from disk every sweep Question: "How often does config actually change?" After: Reload only on explicit signal (SIGHUP) or state transitions

4. Log State Changes, Not Operations

Before: Log "Locked: X" every time lock is applied Question: "Does this log add value?" After: Check if already locked, only log when actually changing state

5. Deduplicate by Extracting Helpers

Before: Same unlock loop in gracefulShutdown() and deactivate() Question: "Why is this duplicated?" After: Extract unlockAll() helper

6. Challenge Edge Case Handling

Before: Complex logic to handle file deletion during watch Question: "How often does this happen? What's the fallback?" After: If periodic sweep handles it anyway, remove the special case

Red Flags to Look For

Process

1. Start with a question from the user or your own observation
2. Trace the justification - why does this code exist?
3. Find the fallback - what else handles this case?
4. Propose removal - suggest removing and explain why it's safe
5. Implement - make the change
6. Recurse - look for newly exposed simplification opportunities