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Learn how to swap Angular’s default Zone.js change detection with Signals, a granular reactive state system. Follow our step‑by‑step guide to create signals, computed values, and effects, verify instant UI updates, and roll back if needed.
Learn how to use ChangeDetectionStrategy.OnPush in Angular to reduce unnecessary change detection cycles, improve performance, and implement immutable data patterns.
OnPush skips change detection unless an @Input reference changes, a template event fires, or the async pipe emits. Learn why mutating arrays in place causes stale views and how to use immutable updates to fix it.
Learn how Angular's ChangeDetectionStrategy.OnPush cuts unnecessary change detection cycles by updating views only when input references change or events fire, with a concrete component example and common pitfalls.
In an Angular application using @ngrx/store , a selector created via createSelector is intended to memoize results to prevent unnecessary downstream computations and component re-renders. However, the default memoization mechanism relies on reference equality ( === ) for its input arguments. When reducers return new object references—even if the underlying d
Goal: Ensure that a component using the OnPush change detection strategy reflects updates made to an @Input object without replacing the object's reference. Constraint: OnPush only marks a component for check when the @Input reference changes or an internal event occurs; mutating properties or array elements in place does not trigger a view update, leaving t
Goal Determine how Angular’s OnPush change‑detection strategy can lead to a component’s view not reflecting state changes when the parent mutates an @Input object without changing its reference. Constraints & Uncertainty OnPush only runs change detection when a reference‐changing input, a component event, or an async pipe emits. In-place mutations (e.g.,
Data Source Synchronization Angular Material's MatTable relies on the dataSource reference to trigger UI updates. When the underlying data array is mutated using methods such as push() or splice() , the table does not automatically detect these changes because the object reference remains identical. OnPush Change Detection Constraints This behavior is more p
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ngrx
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