The original title is: "Angular Old vs New Syntax: A Practical Cheat Sheet (*ngIf @if, Signals, and More)"

Short summary

A side-by-side cheat sheet mapping old Angular template syntax (*ngIf, *ngFor, *ngSwitch) to the new block-based equivalents (@if, @for, @switch), plus signals, computed(), and input(). Each swap includes the underlying change-detection or ergonomics difference, not just surface syntax. Includes a migration schematic command for automated rewriting.

• •Old *ngIf/*ngFor/*ngSwitch map to new @if/@for/@switch blocks with built-in else and empty states
• •Signals replace plain properties for fine-grained change detection; computed() caches derived values
• •Angular ships an automated migration schematic: ng generate @angular/core:control-flow

Generated with AI, which can make mistakes.