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Composition patterns using HostDirectives and Pure Pipes.
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| name | Directives & Pipes |
| description | Composition patterns using HostDirectives and Pure Pipes. |
| metadata | {"labels":["angular","directives","pipes","composition"],"triggers":{"files":["**/*.directive.ts","**/*.pipe.ts"],"keywords":["hostDirectives","PipeTransform","pure"]}} |
hostDirectives to compose behaviors onto components/directives without inheritance.pure: true (default). They cache results based on input reference.appFocusTrap, appTooltip).