Core Concepts

Short summary

Angular 17 introduces signal-based reactive primitives, replacing @Input/@Output decorators with input() and output() functions. New control flow syntax (@if, @for, @empty) simplifies templates, and computed() derives values automatically from signals. This modernizes change detection from Zone.js dirty-checking to granular reactivity.

• •Signal-based input() and output() replace traditional @Input/@Output decorators
• •New @if, @for, @empty control flow syntax streamlines conditional and list rendering
• •computed() enables reactive derived values that update automatically on dependency change

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