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Why does the Angular style guide recommend keeping components small and focused rather than very large? What is the single responsibility principle and how does it apply to writing Angular components and services? Why does the Angular style guide recommend using the OnPush change detection strategy where possible? What are some best practices for structuring a large Angular application with many features?
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What is the official Angular style guide, and why is it useful for a team?

Beginner

Answer

The official Angular style guide provides recommended conventions for naming files, organizing folders, and structuring components and services consistently. Following it helps a team, especially a larger one, keep the codebase predictable and easy to navigate, since every developer follows the same shared conventions.
// Recommended naming convention from the style guide
user-profile.component.ts
user-profile.component.html
user-profile.service.ts
Real-world example A team of ten developers avoids constant naming disagreements by simply following the official Angular style guide's file naming conventions, making it easy for anyone to quickly find and recognize any file in the project.

Common follow-ups: Does the style guide cover testing conventions as well as file naming?;How often does the official style guide get updated as Angular evolves?

Angular CLI & Project Structure;Components & Templates
All 5 Angular Style Guide & Best Practices questions