print only even numbers from structural directive

events.directive.ts

//structural directive demo: To print only even numbers
import { Directive, TemplateRef, Input, ViewContainerRef } from '@angular/core'

@Directive({
	selector: '[onlyEvens]'
})
export class EvenDirective {
	constructor(
		private templateRef: TemplateRef<any>,
		private viewContainerRef: ViewContainerRef
		) { }

	@Input() set onlyEvens(num: number) {
		//number is even
		if (num % 2 == 0) {
			this.viewContainerRef.createEmbeddedView(this.templateRef);
		}
	}
}