Angular Signals

A guide to Angular's signals system for fine-grained reactivity and improved change detection performance.

Usage

Ask about Angular signals, computed signals, effects, or migrating from RxJS patterns.

Examples

• "Create a signal-based counter component"
• "How do I convert an Observable to a signal?"
• "When should I use signals vs RxJS in Angular?"

Guidelines

• Use signal() for simple reactive state
• Prefer computed() for derived values over manual updates
• Use effect() sparingly and only for side effects
• Signals work best for synchronous state
• Use toSignal() and toObservable() for RxJS interop