What are structural directives in Angular?
Structural directives are used to change the structure of the DOM by adding or removing elements. Examples include *ngIf, *ngFor, and *ngSwitch.
Can you explain how *ngIf works?
Sure! The *ngIf directive conditionally includes a template based on the value of an expression. If the expression evaluates to true, the template is rendered; otherwise, it is removed from the DOM.
What about *ngFor? How is it different?
*ngFor is used to iterate over a collection and create a template for each item. It generates a new instance of the template for each element in the array.
Are there any performance considerations with using structural directives?
Yes, using structural directives can impact performance, especially with large lists. It's important to use trackBy with *ngFor to optimize rendering.
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