Automate the Subjective, Humanize the Objective
If you find yourself leaving comments about indentation, spacing, semicolons, or where a curly brace goes, you are spending human attention on a problem that a machine can solve in milliseconds — and you are doing it in a way that feels personal and petty to the author.
The Solution: Linters and Formatters
Every mature language ecosystem has automated formatting tools:
| Language | Formatter | Linter |
|---|---|---|
| Python | black, isort |
flake8, ruff |
| JavaScript/TypeScript | prettier |
eslint |
| Go | gofmt |
golangci-lint |
| Rust | rustfmt |
clippy |
| Java | google-java-format |
checkstyle |
These tools enforce a single, consistent style across the entire codebase — not your preference, not the author's preference, but the team's agreed-upon standard. Once configured, they run automatically on every commit via a pre-commit hook or CI pipeline step.
The Rule
If the linter passes, the style is correct. End of discussion. No human should ever leave a comment about style that a linter could have caught.
Why This Matters Beyond Efficiency
Style debates (tabs vs. spaces, single quotes vs. double quotes) are genuinely subjective. There is no objectively correct answer. When humans argue about them in code review, it creates resentment without producing value. Delegating style to a tool removes the "personal preference" dimension entirely and frees human reviewers to focus on things that actually require human judgment: correctness, performance, security, maintainability, and design.
A common interview question is: "How do you prevent code review from becoming a bottleneck?" A strong answer has two parts: (1) automate style enforcement with linters and formatters so reviewers focus on logic, and (2) keep PRs small so reviews are fast. Bonus points for mentioning that pre-commit hooks and CI gates enforce these standards without requiring human intervention.